Multiple simultaneous instruments on one staff

What would really be great, is if Noteflight could play two or even more instruments on one staff, like if the clarinet and trumpet both play the same thing for the entire piece, there could be just one part that plays both instruments together.

Usually this scenario is pretty rare, but it occurs a lot more often in Classical Era music when the cello and bass are squished together on the same line.

This could also be useful if you have 1st and 2nd clarinets on the same line in a symphony orchestra; the sound can be made twice as loud as just one clarinet, making the mix of the whole ensemble more accurate

It could even be used to make the violin section sound like 10, 34, or even just 3 violins.

Could Noteflight please try adding this feature?