From across the pond . . . having grown up in Los Angeles, the son of a music publisher/record label owner, I have known great musicians all my life and especially when becoming active in the music business. I'm not going to drop names of the many that I have known (you can PM me for that); however, I will give you the story of Otis Redding, whom I met when quite young. My father was the first person to record him. He was 18 or 19 at the time. His talent was fully realized at that age. Because my father didn't have strong promotion for his label and because he would not practice payola (paying radio program directors--it's technically illegal--he was a Witness), the records didn't go anywhere. Otis didn't give up. Within two years he landed a contract with a major label that did have the power to promote him, and the rest is history.
I have observed that world class musicians have these things in common: a great deal of talent, drive, are allied with those who have drive, discipline and luck.
The website LuteRecords.com is a tribute to my father's label. More information about my family's niche in the music business can be found there.