Edit in JSFiddle

li {
    list-style-type: none;
}

li:before {
    content:"♫ ";
    margin: 0 1em 0 -1.2em;
    position: absolute;
    font-size: 16px;
}

<ul>
    <li>list item 1</li>
    <li>list item 2</li>
    <li>list item 3</li>
</ul>