The play table stores play element data.

A play record belongs to either:

• A sound record's instrument-change/midi-device/midi-instrument/play sequence. This sequence is stored as a midi record, foreign key play_id.
• A note stored in the music_data table, foreign key play_id.

The id attribute value is in field element_id.

A play has a list of subelements as defined in the xs:choice section of the play complexType in the MusicXML schema. Each of these subelements is a play_type record with foreign key play_id. See the play_type table definition for more information.