Luther Thomas Ingram (November 30, 1937 – March 19, 2007) was an American R&B and soul singer-songwriter. His most successful record, "(If Loving You Is Wrong) I Don't Want to Be Right", reached No. 1 on the Billboard R&B chart and No. 3 on the Hot 100 in 1972.

Source: Wikipedia (https://en.wikipedia.org/wiki/Luther_Ingram)