[jacquesm]

For many instruments the solution is simple: practice on an electronic version. This obviously does not hold for all instruments and not all kinds of practice but it can have a big impact. It has an additional bonus too, you can put on a headphone and cut the outside world off as well so it works in both directions.

[calf]

I play classical piano, it's really just not the same hehe. At least, the consumer technology is not quite yet there.