Premise: Mosaics is an album by Mark Heard, released in 1985 on Home Sweet Home Records. According to the liner notes in "Ashes and Light", this album was recorded first but delayed by the record company who wanted the less rock-oriented "Ashes" released first. Consequently, this was the first album recorded in Heard's own Fingerprint Recording Studio.
Hypothesis: If you add the individual digits of the year in which Mosaics was released, you will get a number that is prime.