Just a metalophone that sounds like chimes, metallic vibraphone and a .ogg resourcepack assignment .json
the flute already exists
the violin would be interesting
Piano would be too complicated since its the god of all instruments and one of the hardest to record if you take a triple string + hammer mechanical piano. files would weight or depreciate .ogg piano quality so bad it would possibly weight too much or sound too bad.
I feel like a littlle bell with a recorded chime sound, something really delicate would be the best addition ever, you could make music that sounds- spooky
which is all that really lacks
It cant be easier than chimes.