David Bowie

Hint: It wasn't Nile Rodgers.

Fans have speculated for years that band's frontman wrote the song to appease Angela Bowie.

The 1974 track served as the basis for Chris Young's "Young Love & Saturday Nights."

Co-writer Iggy Pop had already released a widely ignored earlier version.

Mid-'70s were not an easy era for the former Stooges frontman, then an old friend arrived.

This was his most commercially successful album at that point, reaching No. 1 in the U.K. and No. 17 in the U.S.

"It's as fresh as it was then," his trusted pianist Mike Garson says.

He recorded the No. 2 U.K. hit in an hour, but there was a memorable mistake along the way.

He saw something at night while on tour in America that prompted him to pull out his notebook.

Mott the Hoople leader says he was far less ambitious than "All the Young Dudes" writer.