Bill Collector Blues (often incorrectly labeled as Telemarketers Blues) is an unreleased track first played live in 2002, but played regularly in 2004, mostly on the Musicology Live 2004ever tour. It is assumed that a studio version was recorded in Spring 2002 at Paisley Park Studios in Chanhassen, Minnesota, but this is unconfirmed. The track has usually only been played acoustically by Prince, with no band backing. It is not known if the track was considered for inclusion on any project.
The song's lyrics joke about Prince getting telephone calls from telemarketers, bill collectors, and fanatics, and that instead of swearing at them like he used to he just went out and got Caller ID.