It’s a fine-grained, audacious work full of overlapping dialogue and bold use of silence and repetition amid the emotional flashpoints, not to mention some terrific songs that sound exactly like pop-rock hits from the era by Grammy winner Will (Arcade Fire) Butler. However, the play’s dedication to unpicking the creative process and the collapse of relationships – even the banal, scrappy, noodly bits – mean it’s also baggy and meandering.