Question: who sings how long has it been going on
Answer: `` How Long Has This Been Going On ? '' , a 1927 song by George and Ira Gershwin How Long Has This Been Going On ? ( Sarah Vaughan album ) , a 1978 album How Long Has This Been Going On ( Van Morrison album ) , a 1996 album with Georgie Fame and Friends `` How Long '' ( Ace song ) , 1974 `` How Long '' ( Charlie Puth song ) , 2017