pxtone (pronounced "pistone") is a music editor from Studio Pixel of Cave Story fame. Essentially the spiritual successor of Organya (the sound engine used in Cave Story), its interface is similar to that of a piano-roll DAW, but with similar limitations observed in s3xmodit formats, even down to the potential for filesize limited categories if the format is popular enough.
The work flow of pxtone might be reminiscent of s3xmodit and other tracker-based music production: you can add samples and tones (known as voices), but said samples are bound to units with which it is possible to switch between different voices, making units more akin to channels in a tracker rather than instruments. Unique to pxtone is the ability to add synthesized voices from two supplementary programs that come with pxtone: ptVoice and ptNoise. ptVoice is primarily used for melodic timbres while ptNoise is used along with some external samples for percussive sounds.
pxtone is available here. There is also a link to an English manual and tutorial (the pxtone used in that is an older version, so advise downloading the latest version from the pxtone page just in case). Documentation of pxVoice is only in Japanese at the moment, and there doesn't seem to be any detailed documentation for pxVoice (Studio Pixel gave a simple explanation that basically amounted to experimenting with values), so advancements in those will come as someone gets the time to translate whatever materials are available (and figure out how the hell pxNoise actually works).
If you want more information on how to get into pxtone at a somewhat basic level, both as a participant and as a host, check out I Am New To pxtone here.
All pxtone battles will be using the latest version of pxtone, so be sure to grab it from the site mentioned above. For those that can't read anime letters, it's the first line that has the word "Download" on it.
Quick Tips:
- Delete "japanese.ico" to use ptCollage in English.