"musical shape" is correct and usable in written English.
You can use it when referring to the way a piece of music sounds, as in "The musical shape of this piece is quite distinct from other similar compositions."
Such is the case with singer and songwriter Bhi Bhiman, who gets whipped into musical shape when Key hilariously channels J.K. Simmons in this music video / "Whiplash" parody.
"The Grateful Dead shatter musical shape better than anyone this side of John Coltrane.
(Usher wrote his lyrics to fit the song's title and musical shape).
Mr. Redman's band tours heavily, and it was in great musical shape.
To Brian Wilson, meanwhile, "feels" were specific rhythm patterns, fragments of ideas, sketches of pain given musical shape and form.
They include the ode to the River Vltava, which takes its musical shape from the water's course through the country.
Grit This show brings together the talents of Scottish theatre hell-raisers Cora Bissett and Kieran Hurley to celebrate the life and music of Scottish musical shape-shifter Martyn Bennett.
At a time when consumers are seizing control of the means of distribution with digitized music files, the Motomixer might be viewed as a kind of proactive musical shape-shifter.
Nevertheless, the unheard lyrics are a shame tonight, as is Benn's uncomfortable between-song patter, which suggests this musical shape-shifter has yet to find his own voice.
His most recent project in musical shape-shifting involved teaming up with The Roots, an American hip-hop band, for "Wise Up Ghost", a category-defying album released in September.
Its popularity is understandable, for the orchestral effects are intriguing, its musical shapes bold and uncomplicated.
