Muscles/I Am Me by Diana Ross 45 is in Very Good Condition! "Muscles" is a 1982 hit single written and produced by Michael Jackson, and performed by American singer Diana Ross. It was released as the first single on September 17, 1982, by RCA from Ross's Gold-certified album Silk Electric. The single reached number No. 7 in Cash Box magazine and No. 10 on the Billboard Hot 100 chart. It climbed as high as No. 4 on the Billboard Soul chart, whilst hitting No. 2 for 2 weeks on the Cash Box Soul chart. The track featured prominent background vocals by Patti Austin with seasoned session singers Maxine and Julia Waters. It earned Ross a twelfth Grammy Award nomination for Best Female R&B Vocal Performance. (Although Ross has never won a competitive Grammy, she was awarded an honorary Lifetime Achievement Award from NARAS in 2012.) The song was originally intended to be an R&B answer to the massive Olivia Newton-John hit "Physical". The B side is "I Am Me" If you bundle 5 45s you will get them for $15