There aren’t too many movies about writers creating new work in the musical theatre idiom, although All That Jazz and De Lovely come to mind, but the autobiographical show about rejection, healing and the creative process authored by Rent creator Jonathan Larson is intriguing fodder for a feature film. Under the first-time directorial helm of Lin-Manuel Miranda, Tick…Tick…Boom! (B+) casts Andrew Garfield as Larson on the verge of age 30, living in 1990 New York, waiting tables and hoping desperately the workshop of his futuristic musical Superbia will put him on the proverbial map and somehow rescue him from the punishing grind. Garfield’s characterization is wild-eyed and eccentric, like a mad scientist with dulcet voice at the keyboard; despite spending a full movie with him, the character still feels a bit at arm’s length. The show-within-a-show structure complicates matters a bit too; and Miranda’s scrapbook meets memory play presentation of it all overstuffs a little too much peripheral detail into the mix to prove his savant-like knowledge of the composer’s career. But there are large parts of the film that really resonate, especially fantasy sequences such as a tuxedo and tap style number introducing high-class living, a diner transforming into performance art and an 11 o’clock duet number blending criss-crossing female voices like a cosmic moment in time. Amidst a whole bunch of Broadway cameos, Robin de Jesus and Laura Benanti shine in sterling supporting moments. Alexandra Shipp is a powerhouse and Vanessa Hudgins a delight in underdeveloped and bifurcated roles. Garfield largely succeeds in carrying most of the momentum on his shoulders and acquits himself nicely with some soaring final act ballads. It all feels a bit like a less urgent prequel to Rent, what with the starving artists, bohemian living and battle against AIDS tropes, but theatre lovers and those working to create their own opus will find much here with which to relate. Even when the behind the music motifs seem strangely surface, watching Garfield’s Larson is still a wunderkind to behold.