maybe some effects for guitars like a killswitch.
EDIT: for guitars, tremolo, wah-wah, and echo effects would be cool too!
I want Triangle!
or an electric triangle lol
Banjo
MARIO PAINT
Ride cymbal
Splash cymbal
More toms
Sizzle from a hi hat closing
Oh, and maybe some Blue Man Group stuff too, like a Tubulum and the PVC Pipes.
These are all great suggestions but if we add too much instruments the loading time would be ridiculously long.
Wouldnāt it? Though iād like some electric instruments because when composing you click on electrics and you see 1 bass
There iād like to see some more.
My idea.
Make all instruments at middle C. I donāt get how an alto sax is higher than a tenor and bari, but the tenor and bari saxes are an octave higher than the alto on Notessimo.
Instruments? Banjo, Euphonium, Wind(a swoosh sound).
When using the tenor and bari, just put them an octave lower than they would be on sheet music. This happens with more instruments, too, like the Fender Strat and the Strat Guitar #1.
I found that ALL the guitars need to be one octave lower than they should beā¦kinda annoying since the only songs I make are rock songs.
But I do have a suggestion for an instrumentā¦ how bout something like a guitar slide? Instead of having to make the tempo fast and having to place 16th notes going up or down
After a while of thinking, Iāve thought of some instruments that Notessimo needs.
Instruments
Harp
Euphonium(baritone)
Harmonica
Bagpipe
Metal Guitar #2(less distortion)
Gameboy(beepy noise, like mario paint)
Space #2(sounds like a twinkle)
Footstomp
Gong(not top-priority, haha.)
Male/ Female Voxes #2(ones that donāt sound all āUHHHHHā-ish.
Bassoon
Tuba #2(Tuba #1 soundsā¦ just, not like a tuba at all.)
Pipe Organ
Ahh #2 (sounds like monks or something)
Wind
Rap Vox (is that even possible?)
Hard Vox (hardcore rock vocals)
Piccolo
Banjo
8-Bit Synthesizer
Egyptiany-soundy-thingy.
DJ scratch.
Ideas
More Time Signatures
Slurs/ Ties
Staccato / accents
Vibrato
Fading (where the note gets louder/softer as itās held)
Ritards (steady decrease in tempo)
Less lag. Really now, folks.
That list seems like everything that has been mention compiled into one postā¦which is a good thing, looking at one instead of several. But some of your ideas, namely ties, staccatos and accents are easily made. For ties, add up the values of each note into the first one. Staccatos, make the length of note the shorter than it should be. And for accents, make the volume louder than 100% or whatever you have it set at.
Well, yeah. Some of the instruments were my suggestion, though. As for the staccatos, accents, and ties - thanks for the tips.
How about Synth Strings without the chord? (3 or more notes together, in case you didnāt know.)
That would be like a synth violin, not strings (strings refers to a chord).
All the sounds from AtemiS-Tracker pleaseā¦ Thank you
To make a gong sound you can see a example of something close in my song triumphant return, also, bassoon would be cool.
also you can make a tie by customizing notes (half + whole = 32 + 64
Seriously, this thing needs a euphonium. Maybe even muted strings?
Ride/Crash Cymbal (The Bell Part)
Rototom
Maraca
Bottles (Blowing over the top)
The sound from moving your finger around a glass
I donāt know if someone already said this, but It would be cool to have instruments that arenā't really instruments like the things STOMP would use; like
buckets/trashcans etc.
I have already seen suggestions bottles and cups and the like,
the sound you get when you slide a straw up and down in one of those restarauntsā cups
a broomstick/staff etc. banging on the ground
those music tube things
the sound you would have banging on a sign
some instruments may already represent these sounds pretty well, but I havenāt heard anything like the good olā
rubber band,
the ruler or
not even the belly drum and the nose whistle!
I doubt any of you will be up for this idea, but I, on the other hand, would make a whole series of songs/beats from only those instruments! 
I guess sort of like spacepixel said, PVC pipes would be cool. Like the Blue Man Group.
I saw them live and they were AWESOME and HILARIOUS
Oh, and I thought of another one- the squeaker (like from a dog toy)
that would be cool!