There are 2 things to try. though I must also say that I don't use boom much, so thereby can not comment on the recording of their sample patterns. On with the things to try:First change your time signature from 4/4 to 3/4. You do this by hitting command 1 to go to the time operations window,
OK, I have the stock Boom plugin which comes with the installation of
ProTools.
I see the different presets, and I also see that if I hold down a note like
C4, or rather middle C, on my midi controller, as long as that note is held,
it plays the drum pattern associated with that preset.