If you're into compiling LMMS from source and knows how to apply a patch, here's something new to try out.
Chord Pad is a proposed new feature for LMMS which allow users to play
chords with numpad. It also makes playing arpeggio easier.
https://sourceforge.net/p/lmms/mailman/ ... /31152305/
Here's an accompanying pdf explaining it all. Chord Pad manual.