26Light, it's intended as a synthesizer for beats, not a MIDI-style composer program. You can change the key which will give you the sharp options you need (flats are sharps of other notes), but you can't do an offkey sharp. If he did turn this into a composer tool or added that as a feature then... this would just be awesome.
Was making a Still Alive thing from Portal and realized there's one major feature that would be nice, the ability to switch keys or octaves in between pages.
 "Step Seq."){kind=icon}
 "Super Mario Bros. Crossover"){kind=icon}
 "Super Mario Bros. Crossover"){kind=icon}
 "The Company of Myself"){kind=icon}