I'd like to thank all who gave opinion, comments and suggestions in this thread. It has been incredibly helpful.
I have a further question though, and am unsure as to whether or not it deserves it's own thread. So I'll just continue here.
For 34 years I have played a certain way. I learned to play (guitar, bass and keys) by emulating my favorite band, A Flock of Seagulls. If you aren't familiar with them, I would suggest looking up a few videos on YouTube. For those that are, the overall arrangements are comprised of sustained legato pads, rudimentary bass lines, and simple guitar hooks. They typically stayed within a certain chord for a few measures before switching to the next. No passage was every very complex or faster than 1/8th notes. In the end, anybody with half a brain could learn their songs.
The problem is that, as an adult, I want to expand and get better, so I can play such things as Sledgehammer or Take on Me. Things of that nature. Therein lays the problem. Neither my mind, nor body, thinks this way. While that might seem like an odd statement and be hard to comprehend, it is the only way I can describe it.
Part of the problem is that I do not have a sequencer outside of SONAR and no, I can not afford one. My general mindset is that I do not like recording something I can not do live, and so, have never invested in a portable sequencer. I may not be the best, or even average, as a player, but at least I'm not lazy.
During the seven years since my stroke and onset of arthritis, I have adopted a set of finger exercises to increase my accuracy and speed. But I seem to have reached my threshold. I will keep doing them of course, but I am not sure it will make much difference.
This style of writing music is what I refer to as "block" writing. In other words, you stay within a certain block or chord, whereas typical music may change chords several times in one measure.
I have sat down, just as an exercise, and tried writing something that sounded like something Justin Bieber might sing (as well as other artists). The result always end up sounding like poo, or somehow migrates back to my usual fare.
If I had started following the greats when I was younger, I might be a lot more free now. For example, if I had learned Van Halen songs early, I would be a lot better guitarist I think. The same goes for other instruments. As it stands though, I now have 34 years of programming and muscle memory to undo.
The question is; how do I break free from this musical programming I have allowed myself to fall into?
Sincerely, Drew