Former fans of Apple Jam disco would remember their theme song in the 70s, which was "The Best Disco in Town" by The Ritchie Family.
"It's the best disco in town,
number one in disco sound
It's the place where hip people meet,
hey, hey"

But as 'themarcha' pointed out, management changed hands a few times. "The Best Disco in Town" was AJ's theme when it was run by Anja the DJ, his brother and his Indonesian wife, whose names I cannot recall now.

Surf disco in Jalan Kampar was AJ's competitor numero uno.