Originally Posted by vivadangermouse
My playing skill just doesn't cut it when I need to perform a complex arpeggio whilst simultaneously sweeping a filter and maybe also adjusting a couple envelopes.
What? You mean you've only got one pair of arms?! Well, there's your problem right there!
If I were an octopus with the keyboard skills of Rick Wakeman ...... I could bore people to death with my neverending solos
...... Seriously though, it's not simply about playing stuff. Synths have a lot of parameters and taking control of many of them at once is what we want to be able to do. Tempo synced control of filter cut off (for example) can yield some fantastic rhythmic results. That's not something that you can 'play' and that's just one parameter.