MDPE.15:5.1 - Music arrangement: perform the selected revision, then rehearse it

Here then names an actual relation in this case: the revised arrangement must exist before that edition can be rehearsed. It is not a universal order for change Work and trial Work.

MDPE.6 contains a source-grounded constructed replay in which an automated monophonic arrangement preserves rhythm, durations, rests, bar lines, playable ranges, and rhythmic entries, while a rehearsal exposes a masked antiphonal relation. The lawful choice is revise before use: adjust dynamics and one voice allocation.

MDPE.15 starts after that choice. The capable arranger or production team performs the selected revision. Identify a development-role assignment when the Work is attributed under it. A named ChoiceResult made by a named DecisionSubject under a separate authority relation selects the revision; permission and consent for the Work are checked separately. Arrangement Work under the applicable Music Method edits the identified score and produces a new arrangement artifact or version. In a later rehearsal, the intended singer and instrumentalists perform the rehearsal Work. A named observer, such as the arranger or rehearsal leader, performs observation Work and records antiphonal clarity, balance, breath, cueing, articulation, and playability under stated room and performer conditions.

The result account can state that the arrangement artifact changed and that the bounded rehearsal supported or failed the antiphonal criterion. It cannot state that the ensemble acquired durable capability, that a concert succeeded, or that a musical practice spread. If the rehearsal never occurs, the correct result is the edited artifact plus the missing representative trial.