You have the near complete collection of those soulful sounds from T-Bird and the Breaks but your missing their very best song: Monkey Wrench!
Please add it! I can’t live without soul! Literally and figuratively!
Hello @CronCron and welcome to the community,
Availability of music on Spotify is up to the artists (or representatives) and / or their labels. Music missing can be a decision of one of them.
Spotify wants all the music in the world to stream and works hard daily to try to convince artists and labels to let all their catalog in streaming.
You can try to contact the artist for asking why this song is not available in streaming.
Btw, T Bird and the Breaks are a great soulful band. Good choice of listening.