low volume/ no sound on piano sounds
finally got round to connecting up a midi keyboard to play sounds in garageband. All going well, then this.... grand piano sound now very quiet, electric piano= no sound. Other sounds play fine and if I call up the little garageband keyboard window and click keys with mouse the piano sounds play at normal volume. Also if I run the little demo song on the external keyboard, the piano sounds play at normal volume?
Baffled? Help! Any suggestions welcome, I was trying things out, effects etc. but can't see/fathom what I might have done.
BB.
Mac Mini, Mac OS X (10.4.11)