Singer and guitarist Jeff Garber and bassist Derek Niedringhaus were in a small local band together called Flower in the southern Illinois/St.
The two continued working together and recorded an album under the band name "Big Bright Lights" in 1997 which was not released until 2001.
Niedringhaus also joined National Skyline, later forming Centaur with Hum singer/guitarist Matt Talbott, the producer of their only single.
On February 24, 2018, Castor reunited for the first time in 20 years, opening for Hum at Delmar Hall in St. Louis, MO.
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