1. Do we have to send the copies of the original scores only via "EXPRESS MAIL SERVICE"? or, Could we send the copies in the form of an image file through email? 2. About CW List, the website provides scores of the songs in CW List, and also shows some list named "purchase through." So, does it mean that we have to purchase the score from one of the publishers in "purchase through list" in order to play songs in CW list? 3. Could we pay the cost by sending cash? not by credit card.