The Fabulous Dorseys

A coal miner who moonlights as a music teacher, he pushes his sons toward saxophone and trombone to spare them the mines. His strict discipline and dream for a better future set the family on a path toward professional music. His illness later becomes a catalyst for reconciliation and family unity.

Childhood friend and later romantic interest who anchors the brothers’ personal and professional lives. She supports both men while navigating her own relationship with Robert Burton and recognizing where help is most needed. Her presence pushes the siblings toward collaboration rather than continued rivalry.

The brothers' mother, torn between pride and concern as her sons chase fame. She longs for family harmony even as she watches the men’s egos collide. Her quiet hope is for reconciliation and a return to a united family.

A renowned bandleader known as 'The King of Jazz' who lures the brothers into his orbit. He serves as a catalyst for their expansion into national horizons and helps spark the idea of the American concerto. His involvement marks a turning point from local bands to major-scale orchestras.

Piano player who joins the Dorsey Brothers and becomes a love interest for Jane. He composes and contributes to the group's evolving repertoire, including the unpublished American Concerto. His decisions and presence create tension and eventual resolution among the others.

The more volatile of the brothers, he pushes for livelier rhythm and heads his own orchestra after disagreements. His early hits and leadership style drive the Dorsey sound into the swing era. Though prone to conflict, he remains a defining force in their shared musical legacy.

The other half of the duo, he achieves huge dance-band popularity and often tests the boundaries of jazz tempo. His relationship with Jane and his competitive dynamic with Tommy shape the brothers’ public personas. Ultimately, their mutual success coexists with their unresolved family tensions.