Crescendo Music Notation Editor

Everything is easy to use and comfortable except the following: You can't write more than one part in one staff. That's really annoying. If you improve that, the program would be perfect.

One can change these all right, but how can he delete Time Signature and Key Signature?

I am making a score for my jazz band, and while everything else is incredibly helpful and intuitive, including the "auto format" function to make the score appear impeccable, I cannot select a region in a single track and copy/paste it to other tracks. If I try doing that, it highlights all tracks, so it is the most counter-intuitive feature of this application. So I have to enter individual notes for every Tenor Sax track manually, rather than having the luxury of Ctrl-C and Ctrl-V.