| Comfortable range for this instrument.
comfortableRange  :: Instrument -> Ambitus Pitch
comfortableRange = Data.Maybe.fromMaybe (error "Missing comfortableRange for instrument") . Data._comfortableRange . fetchInstrumentDef

-
comfortableRange  :: Instrument -> Ambitus Pitch
comfortableRange = Data.Maybe.fromMaybe (error "Missing comfortableRange for instrument") . Data._comfortableRange . fetchInstrumentDef
comfortableRange = Data.Maybe.fromMaybe (error "Missing comfortableRange for instrument") . Data._comfortableRange . fetchInstrumentDef