Good points, Kevin. I enjoy the Yamaha P-25F because of its compactness and because its limitations encourage improvisation. I often pick it up to play by ear or have it handy when I’m at the piano keyboard to see what a passage I’m working on sounds like on the melodica. The short sopranos would have a similar appeal, just in a higher range. But I’m guessing that they would also be convenient and cool playing in a group like Melodica Madness, where you’re assigned a soprano part. Even to the extent that their upper range is just barely higher than that of a 37 key alto, they’re appropriately identified as soprano because of the limitation at the lower end.