Давольно таки не плохая (хотя и старенькая) гирлянда на сайт (если не ошибаюсь то от яндекс).
При наведении курсора (на шары) они звенят и больтаются. Хотя срабатывает не во всех браузерах.

http://s7.uploads.ru/sv9fB.png

Тестил здесь на форуме. На скорость не влияет.

Код:
<link rel="stylesheet" href="http://uguide.ru/js/script/ds-lights-muzik.css">   <script type="text/javascript" src="http://uguide.ru/js/script/ds-lights-muzik.js"></script>   <script type="text/javascript" src="http://uguide.ru/js/script/ds-lights-muzik1.js"></script><div class="b-page_newyear">   <div class="b-page__content">   <i class="b-head-decor">   <i class="b-head-decor__inner b-head-decor__inner_n1">   <div class="b-ball b-ball_n1 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n2 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n3 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n4 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n5 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n6 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n7 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n8 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n9 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i1">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i2">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i3">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i4">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i5">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i6">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   </i>   <i class="b-head-decor__inner b-head-decor__inner_n2">   <div class="b-ball b-ball_n1 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n2 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n3 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n4 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n5 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n6 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n7 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n8 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n9 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i1">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i2">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i3">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i4">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i5">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i6">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   </i>   <i class="b-head-decor__inner b-head-decor__inner_n3">   <div class="b-ball b-ball_n1 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n2 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n3 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n4 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n5 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n6 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n7 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n8 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n9 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i1">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i2">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i3">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i4">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i5">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i6">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   </i>   <i class="b-head-decor__inner b-head-decor__inner_n4">   <div class="b-ball b-ball_n1 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n2 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n3 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n4 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n5 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n6 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n7 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n8 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n9 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i1">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i2">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i3">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i4">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i5">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i6">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   </i>   <i class="b-head-decor__inner b-head-decor__inner_n5">   <div class="b-ball b-ball_n1 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n2 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n3 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n4 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n5 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n6 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n7 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n8 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n9 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i1">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i2">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i3">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i4">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i5">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i6">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   </i>   <i class="b-head-decor__inner b-head-decor__inner_n6">   <div class="b-ball b-ball_n1 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n2 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n3 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n4 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n5 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n6 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n7 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n8 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n9 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i1">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i2">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i3">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i4">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i5">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i6">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   </i>   <i class="b-head-decor__inner b-head-decor__inner_n7">   <div class="b-ball b-ball_n1 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n2 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n3 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n4 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n5 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n6 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n7 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n8 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_n9 b-ball_bounce">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i1">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i2">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i3">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i4">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i5">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   <div class="b-ball b-ball_i6">   <div class="b-ball__right"></div><div class="b-ball__i"></div></div>   </i>   </i>   </div>   </div>

Пользуйтесь  [good]  Android 8.1.0, Chrome,70.0.3538.110