(n.) A tune, air, strain, or a whole piece, played by a single person on an instrument, or sung by a single voice.

air airlift alienated alone aloof apart aria aria buffa aria cantabile aria da capo aria da chiesa aria di bravura aria di coloratura aria fugata aria parlante arietta arioso aside barnstorm bravura cantabile canto cantus choir claviature coloratura companionless console control copilot descant detached drive echo eighty-eight fingerboard flight fly friendless great homeless hop individual insular isolated ivories jump keyboard keys kithless lay line lone lonely lonesome manipulate manual measure melodia melodic line melody monodrama monologue monology note organ manual pedals peel off piano keys pilot recitative refrain removed rootless run separate separated single-handed singular sole soliloquy solitary solo part song soprano part strain swell test flight treble trip tune unabetted unaccompanied unaided unassisted unattended unescorted unexampled unique unrepeatable unseconded unsupported withdrawn