Though singer Don Downing's lone charting single was the Memphis soul-tinged "Lonely Days, Lonely Nights," which charted at number 65 R&B in summer 1973, he's a longtime favorite of dance music devotees for "Doctor Boogie." The pumping brassy number was a huge hit in disco clubs and found its way onto the play list of major market radio stations in Chicago and elsewhere in 1978. Downing is the brother of singer Al Downing who had a double-sided Billboard-charting hit on Chess Records with "I'll Be Holding On." From Texas, Downing's perennial dance favorite was written by Gary ...