Release and promotion
The album was included with some Barney videos in 1998 and was occasionally bundled with the Barney's Great Adventure: Original Motion Picture Soundtrack as a free CD sampler in that same year.
|1.||"By Yourself"||Holly Doubet||1:38|
|2.||"A Silly Hat"||Philip Parker||1:32|
|3.||"Hooray! It's Your Birthday"||Angelo Natalie||1:42|
Credits for Songs in the Key of Purple adapted from the CD pamphlet.
- Bob West — lead vocals, voices (Barney)
- Julie Johnson - vocals, voices (Baby Bop)
- Patty Wirtz - vocals, voices (BJ)
- Bob Singleton - arranger, producer
- Charles King — Lyons music administrator & researcher
- Jonathan Smith - Lyons music administrator & researcher
- David Boothe - mixer