JJ on KPOO just played the hit cover version of Gil Scott-Heron's "The Bottle", by Brother to Brother -- it actually charted Pop (#46) and was a Top Ten R&B single in 1974. Sadly, it's out of print.
Lawd! The Mighty Hannibal's "The Truth Shall Make You Free" -- an anti-drug hit from '73 that's much better than JB's "King Heroin".