Glee hunk Matthew Morrison is releasing his debut solo Mercury Records single "Summer Rain" today at iTunes. No, it's not a Belinda Carlisle cover. It's also definitely not trying to appeal to the ankle-biters, and he's not trying to be someone he's not (no out-of-nowhere rappers, no bowties made of hair).

After the jump, behind-the-scenes video of Morrison performing the song, which is the first release from his upcoming (May 10) debut album...