SoundCloud Passes 4 Million Users, Partners With Headliner.fm To Give Bands A Killer Promotional Tool

By now, you may have run across a SoundCloud audio track somewhere out there in the wild, wooly Interwebs -- perhaps during one of your mad, late-night music searches. In which case, you're familiar with the tell-tale signs: The scrolling orange cursor, the messages tagged mid-song, and that distinctive social waveform layout. For those who have no idea what I'm talking about, SoundCloud is the fast-scaling, Berlin-based audio sharing platform that enables music-makers and audio-lovers to upload and share audio tracks. Because of SoundCloud's somewhat unique visualization (tracks are laid out horizontally in waveform, as they might appear were they fresh out of the studio, or playing in GarageBand or some other music creation app), users can add comments to the waveform at specific times during the track. (Like, "you clearly stole this guitar riff from Steve Vie, loser", for example.) You can then share your tracks privately with your family, publish to social networks, or embed your sounds on your site -- all the while allowing your listeners to tag tracks with their comments.