There are definitely ways of entering music in MuseScore which speed things up. I’ve just copied in a four page piece, transposed it up a fourth for lap harp, and put in a few changes, in a fairly short time. You use letters and numbers for entering notes, and since music is based on repetitive figures, you can do a lot of copying and pasting, including pasting a figure and then moving the pitch up or down a bit and perhaps changing a note or two. Although it threw a hissyfit when I copied a section which kept changing between 3/4 and 4/4 without putting the correct time signature changes into the blank measures before pasting into them, so I won’t do that again. It’s an Andres piece, so involves various less common techniques, different note heads and so forth, but to be honest I haven’t written them all out in detail as I know it well enough not to need “sons xylo” or “sons pinces” written over every single phrase it applies to. I still haven’t worked out how to put accented letters into the text, though.