In the general forum a few people have mentioned wanting to be able to change the music that comes with their home streets, so how about a jukebox as a mechanism for this? It could be crafted with a tinkertool, placed in your house or yard, and loaded with possible tunes in a few different ways -- it could have a set series of choices, or you could pick up new options with upgrade cards, or you could feed it musicblocks to expand the repertoire.