The song was first on the Leo Kottke album from 1976, however on that album it was only called Airproofing and was 2:19 min long. Since then Leo further A Shout Toward Noon and on that album we find Air Proofing Two. And it was now 4:10 min long.
If you are wondering what type of guitar Leo is playing, it's and 12 string Taylor guitars acoustic electric guitar. Taylor guitars have now also made an Taylor Leo Kottke 12-String Acoustic Guitar also called a Taylor Leo Kottke Signature 12-String. It's not a cheap guitar but it does have a very good overall Score of 9.6.
Well what are you wating for, get out you're guitars and tune them down and play some Leo Kottke!!