<P> "How Long Has This Been Going On?" is a 1927 song by George and Ira Gershwin . </P> <P> How Long Has This Been Going On may also refer to: </P> <Ul> <Li> How Long Has This Been Going On? (Sarah Vaughan album) (1978) </Li> <Li> How Long Has This Been Going On (Van Morrison album) (1996) </Li> </Ul> <Li> How Long Has This Been Going On? (Sarah Vaughan album) (1978) </Li>

Who wrote the song how long has this been going on