What are Properties? Properties  Property ID Expected Type
Description  This type doesn't have any properties  Concert
/music/concert_set_list/concert /music/concert reverse, unique,
disambiguating Artist /music/concert_set_list/artist
/music/artist  The primary artist or artists that performed this
piece.  Song /music/concert_set_list/song /music/composition  A
list of compositions performed by this combination of performers
during this concert. E.g. if a band played 10 songs themselves,
and were joined by a guest artist for an eleventh song, you
would enter the 10 songs here (each in a new input box), with
just the band in the "artist" property. For the eleventh song,
create a whole new instance, and enter the song, the band, and
the guest artist.  Guest Artist
/music/concert_set_list/guest_artist /music/artist  A musical
artist, which can be an individual or a group, who performed
with the main act on a small number of pieces in this concert.
This should not include backing musicians of the main act(s). An