Tuba Solo - Level 1 - Digital Download SKU: A0.1251768 Composed by Erik Nielsen. 21st Century,Children,Classical,Contemporary,Instructional. Individual part. 7 pages. Middle Branch Music #845981. Published by Middle Branch Music (A0.1251768). Slidin' is a set of 10 short pieces with evocative titles and different moods for beginning tuba. It is suitable for upper elementary or middle school players and may be considered as grade 1 or 2 in difficulty.