- POST /parties
========== finished / done ================
Party
- name
- users (has many)
- party_tracks (has many)
- party_artists (has many)
User
- name
- fb_uid
PartyTrack
- name
- played_at (datetime)
- party_artists (references :party_artist)
- parties (references :party)
PartyArtist
- name
- counter (integer)
- party_id (t.references :party)