In case anyones missed it on the MelodicaWorld YouTube channel, I’ve just finished a new creation. It’s a melodica with an added keyboard on the left hand side. The unique thing here is that the left had keyboard mirrors the right side.
So you would use exactly the same hand movements on either hand to play the same notes. It makes it easier to play than a piano, where you’re effectively using 2 systems – one for each hand. But it did take a bit of getting used to!