kiji-express-music: EXP-376. Update kiji-express-music to reflect EXP-368 builder additions. Also includes updates for EXP-358 builders

issue: https://jira.kiji.org/browse/EXP-376
review: https://review.kiji.org/r/1515
commit: https://github.com/kijiproject/kiji-express-music/commit/661d74a35cd3ff80ebd40438e1daefa2b833834e