"Heard It Through the Grapevine" is a lot of fun on Guitar but drums, bass and vocals (or at least half the song for vocals) aren't anything to write home about.
Not every song that comes out is going to be a rock and roll time for all 4 (now 5) instruments. But thankfully we're evolving past that phase where if it was boring on guitar it was a terrible DLC song.
I thought the drums were better than the guitar.
Bass isn't too bad either.. but yes vocals suck :P
The Cure 
My Chem.