There is a way to trigger patterns by pressing a key, I’ve only read this - never tried.
1 track can have multiple sounds by sound- or parameter-locking.
So I THINK you could have 1 to 4 tracks with different sounds inside eatch track, triggered by one key.
Now if it’s just a sound you are looking for ( like from the + DRIVE or SOUND POOL ) it’s not possible as far as I know. Parameter - locks can’t be nested in a sound. they are track-related.