Edwards Alto Trombone outfitEdwards A265 Alto Trombone. Available via special order only! The alto trombone can easily be overlooked as a luxury for trombonists. After all, the parts designated "alto trombone" can be performed on small (and even large) bore instruments. However, the timbre achieved with those instruments is never quite right and the composer's intentions may be compromised. Since Edwards does not like to compromise, we offer the A265 Alto Trombone, an instrument