Piano,Trombone - Level 2 - Digital Download SKU: A0.1379893 By Meghan Trainor. By Kevin Kadish and Meghan Trainor. Arranged by Jps Arrangements. Film/TV,Pop,R & B,Soul,Standards. Score and part. 6 pages. Jps Arrangements #964600. Published by Jps Arrangements (A0.1379893). All About That Bass for Trombone and piano is a catchy, powerful pop song written by Meghan Trainor and Kevin Kadish. This arrangement captures the infectious rhythm and playful spirit of the original recording. Perfect for beginner/intermediate musicians.The arrangement has the figures and is in Bb major.