Lots of releases, especially classical, have liner notes translated into several languages approprately credited. MB has ‘Work: translation of’, but with liner notes you either even out the hierarchy by giving author and translator equal credit ‘liner notes by A & B’, thereby also impying their coöperation on 1 text or authorship over 2 different ones; or you can approximate translation credit as ‘liner notes: additional’ which has an additive notion but lacks in dependency.

At credit ‘liner notes’, add attribute ‘translation’.