i see it as a question of...is it his actual songwriting skills..OR is it his publications about songwriting..there is a monumental difference...and where does his influence lie, in either one, or both.Was hummingbird influenced by his writing prowess,which in turn helped her to be a better writer..or was it his insight, and tips, and pitfalls of the business end of the craft,which helped in her understanding of how to hack one's way thru the songwriting jungle...or perhaps a mixture of both..But there is a myriad of options in this business..the only solid advice in this business is a finger pointing you in the right direction..the rest is up to the songwriter...Terry..