To answer most of your questions ... I shot this ad with a sigma 14mm f3.5, canon 28mm f1.8, and a nikon 105mm f2.8 micro. Audio was recorded on a zoom H4n with a Shure SM89 shotgun mic. I recorded the song with my martin guitar plugged directly into the line input of the H4n and using the stereo mic as well. Then I handed the finished project over to my buddy Rabb Whitehead www.rabbwhitehead.com and had him mix the sound for me.
Also this was one of the first times I had used the glidecam 4000 with the smooth cam filter in final cut. Such a great combination for tracking shots so long as they only move in one direction.