A MIDI controller doesn't produce sounds, it only puts out information (which note to play, how loud to play it, etc.). When you play a MIDI file on your computer, you hear sound because the raw MIDI information is sent to a set of sound files on you...
the description is a bit vague but you can google "guitar effects, david gilmour" and find it. use the tabs in some of the sites to narrow down exactly where in the song it occurs, and then you can join a forum.to ask the question more specifically
most of us change it at 3000 miles, after the initial oil change. sooner if your bike requires it. i personally use synthetic oil and have been since 1996. i use it at my first oil change. some people have said synthetic is too slippery. bull***. oil...