Apologies for the belated reply guys. Been away from home the past couple of days. Firstly, thanks! Really, really glad you both enjoyed it!
Flex - I've removed the "eval" tag. I'm just happy to share and I'm still learning the ropes of the forum. I'll get there!
Zorrakh - Agreed about some of the transitions. A little clunky at points. I was aware of time and I didn't want to spend too long on each section, although, some turned out a bit longer than others. The whole thing actually started years ago when I used to drum along on pillows to OST's and I always thought, "I should do a Sonic medley in the vein of Metallica". Few years later, I finally got a semi-decent setup and started doing these things from home. For the rhythm guitar, I generally just followed the bass - something that's very common in metal. However, in the Sonic OST, the bass lines moves around quite a bit, rather than grooving on root notes - for the most part. You could probably tell I was a little bit stumped in "Labyrinth Zone", as I played it safe with chord stabs and dead notes . Something I found when playing the main melodies on this particular medley was that they sound quite thin - not tonally speaking. I don't know how to explain it very well. It just lacked emphasis. So, that's why a lot of the melodies are double tracked and/or harmonizing using an octave down/up effect. On my guitar, I have 21 frets (high C#) so, I was lacking a higher range on some parts - such as the secondary melodies on Scrap Brain Zone. That was done tracking 2 guitars, each an octave up, and one detuned a few cents, for that real nasty kinda' demented violin/metallic synth sound! I rewrote all the drums from scratch and used Addictive Drums (with the metal kit) for samples. Definitely got more up my sleeve!
...and thanks again