@jonas Is there a way to play the result of the query? That would be a pretty awesome feature.

I would really like being able to skip an entire album.
Similarly it would be nice to be able to do it through the CLI so that I could skip album remotely from my phone (where control is challenging because I cannot browse the playlist).

Wrt OP's custom tag request I believe it can already be achieved with comments; Comment contains Occasion=Christmas.