interpreter (n.)
- annotator
- artist
- artiste
- cicerone
- commentator
- critic
- cryptanalyst
- cryptographer
- cryptologist
- decoder
- demonstrator
- dragoman
- editor
- executant
- exegete
- exponent
- expositor
- expounder
- go-between
- guide
- lexicographer
- maestro
- minstrel
- minstrelsy
- musician
- performer
- player
- scholiast
- soloist
- translator
- virtuoso
Egad, I think the interpreter is the hardest to be understood of the two!