I've got a 25, 2 61's, and a 88 (and a 73, but that's my Rhodes); one of the 61's is out of commission right now. I use the 25 quite a bit actually. So for someone who doesn't really play piano and is just writing lines, it should be fine. Now if you really want to play, a 49 will not cut it; it simply doesn't have enough range. To play something like this, you'll need at least a 61...