Baritone Saxophone Solo - Level 5 - Digital Download SKU: A0.1310539 Composed by Charles Koechlin. Arranged by Alvin Wong. 20th Century,Chamber,Classical. Individual part. 6 pages. Alvin Wong #899602. Published by Alvin Wong (A0.1310539). Bassoon Sonata Op.71 by Koechlin, Transcription for Baritone SaxophoneOriginal Keyalvinwongmusic@gmail.comalvinwmusic.com.