Two Album Leaves (Neuheit Tuba) (Neuheit Posaune) Ralph Sauer has beautifully arranged Two Album Leaves for Tuba or Bass Trombone and Piano by Engelbert Humperdinck the composer (not the rock star) of the operatic masterpiece Hansel and Gretel. These two short works originally written for violin in the early 1900s are deliciously lyrical and Romantic. Every tubist or bass trombonist must perform a solo work in their lifetime by Humperdinck, and now is the chance to add that little piece of heaven to the recital