Katy Perry's Last Friday Night Named Song Of The Summer

The network tells us: For the last 14 weeks, we've been tracking the race to see which track would become this year's Song Of The Summer.

Since people consume music in so many different ways these days, our goal was to put together a democratic formula that compared how a group of over 70 songs performed across five of the primary channels that people frequently use to listen to their favorite jams: the Billboard Hot 100 (radio play & sales), the iTunes charts (pure sales), Last.fm scrobbles (listening on computer and mobile devices), the YouTube music charts (streams) and, of course, our VH1 Top 20 Video Countdown.