I have purchased two of Mark J. Smith courses (www.talkingbass.net) in the past, and I have enjoyed/learned much from his instruction - he is not only knowledgeable teacher but an effective one, IMO. I am seriously thinking of buying his notation course on sight reading (volumes 1 and 2) but the price tag, for me at least, is a bit high. Do any of you own this sight reading course, and if so, do you recommend that I buy it? Thank you! This is an excerpt (video) from that course...click here.