FL Studio's piano roll feels like Photoshop: draw some notes, select a couple with shift+click, make them shorter by dragging the first one's right edge, actually they're too quantized so do it again while pressing alt to not be limited to quantization, duplicate them a bunch of times with ctrl+drag (I think? It'sbeen years), then select the entire thing and duplicate it above twice to turn it into a series of major chords, select a few of the middle notes and drag them one row down to make the notes minor, then select all and right-click-drag the velocities to create a rise towards a crescendo (try that on a drum roll, sounds great). Or, my favorite flow: record some things, then select all with Ctrl+A and shrink it to 1/2 the length so it's in the speed I planned it to be in but can't play well enough to record in.

Tracktion's feels like a grid editor: you can edit specific notes but there's not really any useful keyboard shortcuts or mouse behaviors to help you draw music with it.

i believe he is talking about the built in set of midi generators and bars