If you missed the announcement, Rock The Bells announced its lineup yesterday. Like always, Guerilla Union made waves, bringing in Nas, Ice Cube, Kendrick Lamar, Dipset, A$AP Rocky and many, many more (check the full lineup here). Deltron 3030, the supergroup of Del, Dan The Automator and Kid Koala were also brought in. What brought the tidal wave though was the 20 year anniversary of Bone Thugs-N-Harmony, performing E. 1999 Eternal in its entirety. In hip hop’s history, no set of artists have perfected a sound quite like Bone Thugs. Their gospel infused, sing-rap harmonies were unmatched in their time and have yet to be truly replicated in 2012. One collaboration comes close though. When Oakland’s Main Attrakionz (who we tried to interview once) and fellow Bay Area residents Friendzone get together, the result is pure, blissful hip hop. Remember “Perfect Skies” off of 808’s and Dark Grapes II? Friendzone. Shady Blaze’s “Follow Me”? Friendzone. The newest cut from the two brings the comparison to another level. “Green Ova To The Top”, featuring Shady Blaze, is vintage Bone Thugs. The light-hearted guitar, sing-song chorus and bitter-sweet verses are all there. Main Attrakionz are not Bone Thugs. Not even close. But when they get together with Friendzone, the two make some uncanny throwback joints. Stream and download below.