“Imagining an alternate soundtrack to a movie is idiosyncratic, as songwriting prompts go, but it seems to work for Rich Aucoin. The Canadian musician has been composing that way all along, often in sync with beloved children’s programming: Aucoin intended his 2007 EP Personal Publication to accompany How the Grinch Stole Christmas, while his 2014 LP Ephemeral matched up with the 1979 Claymation ve”