Double Bass,Piano,String Bass - Level 4 - Digital Download SKU: A0.1478274 By Nick Greenberg. By Nick Greenberg. Arranged by Nick Greenberg. Contemporary. Score and part. 11 pages. Nick Greenberg #1055645. Published by Nick Greenberg (A0.1478274). If Only, a unique piece for double bass and piano, combines elements of both modern and romantic styles.