Conversation so far:
Demo tapes were produced by who?
Waronker paired Wainwright with producer Jon Brion, and the two spent most of 1996 and 1997 making the record.
Wainwright was nominated for four awards by who?
Wainwright was nominated for four awards by the Gay & Lesbian American Music Awards.
Rufus Wainwright won what media award?
Rufus Wainwright won a GLAAD Media Award for Outstanding Music Album.
In 1996 Wainwright toured with who?
Wainwright toured the UK as "Special Guest" of Kate & Anna McGarrigle.
In December of 1998 he appeared in what commercial?
In December 1998, he appeared in a Gap commercial.

Question: In that commercial what did he perform?
Self-contained rewrite: In Gap commercial what did Wainwright perform?