Good! Its by far our best!
But, First off, Welcome to the Forum petermagz !
Here are all important links:
http://lmms.io/forum/viewtopic.php?f=1&t=4740
-A few rules and useful forum instructions
my guess is that your piano-roll is open, but outside your current view!I can't open the piano roll with my Mac does anyone know the shortcut to open the piano roll?
Scroll your screen outmost right, ans see if you havent placed it out there. Also do look for a minimized one
Here are all shortcuts for LMMS:
https://lmms.io/wiki/index.php?title=Key_Mappings