Have learners input notes using only their voice or an instrument of their choice. Once they have their choices, play it back in a loop (it will do this automatically) and play an accompaniment that fits while the loop is playing. If you are working in a particular key, this could work really well for reinforcing that particular key signature. Help reluctant singers find their pitch by seeing if they can make one of the colours light up by either singing loud enough. This function is much more sensitive if the notes played are in tune. It could work for helping singers stay on pitch or for pitch training.