I found a few RB3 keyboard videos/tutorials. It looks like the keyboard gameplay is also QTE based. I am looking for a different kind of keyboard games.
I understand, but rhythm is one of the hardest things to learn in music, so it's not so bad for learning. The games themselves are pretty good with the various difficulty levels you can play them at. You can play all songs with a 'no fail' mode. I would probably teach my son music this way first. Let him focus on getting the rhythm right, and then slowly expanding the number of keys/strums/hits of the various instruments, and once he can manage simple songs, I will slowly start to introduce some theory (which you can also get from the tutorials).
The timing while difficult, is easy to grasp after even a little while. You can start training this using the non-pro modes, and just play on easy, which will only use three buttons. Then you start with focussing on just one of the three buttons (colors) to get the timing right. Once you get that, you expand to the other colors, and once you've got that down, you can start doing more complicated rhythms.
Once that goes well, you can move on to the tutorials (which then won't cause a QTE style problem) and the pro mode songs, at full speed or at a training speed (you can bring it down to something like 60% of the original speed). As the songs are categorised in difficultly from very easy to very hard, you would work through the groups of difficulty levels.
And even the non-pro mode songs keep being great exercise. I really regret that I didn't have games like these available when I was a kid - it would have helped a tonne and speeded up my learning to no end.
Another advantage of Rockband 3 is that you can play so many different instruments with it.
The Yamaha scores would wait for the player and synchronize all the accompaniment with the player's pace. You really do feel like you're in control and in full orchestral support. The music was simply beautiful. Even my wife was wowed when she tried to play one for the very first time.
I agree that's a nice feature, but not necessarily great for learning to be honest . Rhythm is hugely underestimated, and just playing the old 5 button fake guitar in these type of games has improved my skill immensely. I've played in a few bands, and in the end playing the actual notes is never as hard as keeping a steady pace and staying together, rhythm wise.
It also has optional LED on each key to show which ones to press. Eventually the kid/adult would grasp music.
I had a few midi apps like that back in the day, which would show you a guitar or a keyboard (The Pianist it was called, had some great midi tracks and there was a wonderful Jazz Pianist version, and Guitarist)
But along the way they need lotsa encouragement, entertainment and rewards.
This is where I like Rockband a lot - as it scores you for your correct notes, and various little entertaining distractions involving combos and multipliers - you get an incredible sense of progress. Each time you get more stars/higher percentage or just make it through a really difficult song with no fail mode off, its a reward. Then there are the fans you accumulate, and the heaps of bonus items to adorn your band members with. Not all of those are equally interesting, but especially just working your way towards a 100% score on a song is amazing (I admit I only have a 99% here and there, no 100% yet though I think I only missed one note on Don't Stand So Close to Me).
Now for a console, all the computing power, AV units, speakers, LCD screen are already in place. Only the software is lacking. Once hooked, it would be a multi-year engagement too. I could use one to complement the traditional piano classes.
I think your family could end up liking it a lot, especially as you can play it together as well - there are up to three vocal parts to sing, drums, bass, guitar and keys.
I also think that anyone who plays music should probably learn to drum at least a little bit. All instruments have a percussive element to them, and drumming is such a great way to learn to understand that better.
I haven't checked out Wii Music yet.
Don't ....