Considered an outstanding basso buffo singer, he created many roles on Italian stages, including in two of Donizetti's operas: Ivano in Otto mesi in due ore and Cesare Salzapariglia in Le convenienze ed inconvenienze teatrali.
Luigi Ricci composed the role of Michelotto in his opera Chiara di Rosembergh specifically for Galli's voice.
While the company was in residence at Stockholm's Mindre Theatre, it premiered Foroni's opera Cristina, regina di Svezia.
His last stage performance was as Don Annibale Pistacchio in Donizetti's Il campanello at the St James's Theatre in London in November 1857.
The critic in The Musical World described him as "an excellent buffo" who contributed to the opera's success with the London audience.