Sing Seven Seas marks a major new chapter for British composer, arranger and trombonist Callum Au, internationally recognised for shaping the sound of global artists including Michael Buble, RAYE and Josh Groban, Au now puts his own voice front and centre with a large-scale recording of original music. Written for an expanded ensemble of over 80 musicians, Sing Seven Seas moves beyond the traditional big band, combining classic swing, contemporary jazz and orchestral colour.