Angels Tango - Trombone Duet (Ttrbn/Btrbn + Btrbn) Instrumentation 2 (Bass) Trombones or 1 Tenor Trombone – 1 Bass Trombone Description Angel’s Tango was written for Martin Schippers and Tomer Mashkowski. After ‘Devil’s Waltz’, this is the second chapter in a trilogy of duets in collaboration with Martin and Tomer. Instrumentation 2 (Bass) Trombones or 1 Tenor Trombone – 1 Bass Trombone