Edit in JSFiddle

<button class="spotify" title="Save"> <span class="bt-icon"></span>
 <span class="bt-text">Save</span>
</button>

.spotify {
    background: #84bd00;
    border-radius: 500px;
    color: #fff;
    cursor: pointer;
    font-size: 11px;
    line-height: 11px;
    margin: 0;
    min-width: 92px;
    padding-top: 2px;
    padding-bottom: 3px;
    position: relative;
    text-align: center;
    white-space: nowrap;
    border: 0;
}
body .bt-text {
    margin-left: 13px;
    padding: 4px 4px 3px 8px;
}
.bt-text {
    display: block;
    text-transform: uppercase;
    font-weight: 200;
    letter-spacing: 1px;
    font-size: 100%;
    padding: 4px 4px 3px 8px;
    padding-top: 4px;
    padding-right: 4px;
    padding-bottom: 3px;
    padding-left: 8px;
}
.bt-icon {
    background-image: url(http://i.imgur.com/bQBNtwu.png);
    background-position: 0 0;
    background-position-x: 0px;
    background-position-y: 0px;
    content:'';
    display: inline-block;
    height: 17px;
    position: absolute;
    top: 3px;
    width: 17px;
    left: 3px;
}