MDS - "MIDI Stream". Foobar2000 has an addon for it, but XMPlay's MIDI plugin doesn't know this file type. (I have encountered those files with .MID file extension, though.)
Here are examples:
https://gekk.info/midis/RRASH/There are also SBK files, but the uploader hasn't figured out how to use them yet.
A header of one looks like this:
RIFFö±..sfbkLISTÌ...INFOifil........isng....EMU8000.irom....1MGM..iver........INAM....User Define Bank..IPRD....SBAWE32.IENG....Unknown.ISFT....SFSTORE.DLL v1.0..ICRD....22 9 95..ICOP$...Copyright © Creative Technology Ltd.LIST~§..sdtasnam....Kyodai Kick #3......Dance Snare.........BIGSNARE............Acoustic Tom........High Hat Closed.....High Hat Foot.......METALHH.............CONE................Brass Tamborine.....Springy Splash......MEDCRASH............CHINA...............EOS.....
