I have read this article four times. Started learning guitar one yr. ago. I could not find a way to measure my progress until Iread your article. It tells me I have been building a rep-er-twar. I will start my repertoire book today. I know I cannot learn everything but I can learn many thinges. Commitment , you teach, I'll learm was what I wrote on a Paper the day I found G.T. Every day I remind myself of this as I pick up my guitar. Today a new word going on my list. Rep-er-twar. My musical journey has just started.