Violin, Violin Duet - Difficulty: medium-difficult Violin Duet Collection - Unaccompanied. Edited by Harvey S. Whistler and Herman Hummel. Rubank Educational Library No. 161. Classical. Duet songbook. With standard notation, fingerings and bowings. 56 pages. Rubank Publications #RUBL161. Published by Rubank Publications (HL.4472680).
Flute 30 Virtuoso Studies in All Keys - Op. 75. Composed by Ernesto Kohler (1849-1907). Edited by Robert Cavally. Robert Cavally Editions. Instruction. Softcover. 80 pages. Hal Leonard #B301A. Published by Hal Leonard (HL.970012).