You only need to look to painters who's talent was discovered after their death for proof.
The psychological makeup of many highly talented people requires a second participant to bring "public success", Lee Krasner & Jackson Pollock for instance.
PKR,
Back before WWII there was this painter Van Me-GAR-ann who was mighty discouraged. The critics wrote him off as being untalented. Van-Me-GAR-ann decided he would exploit some art history and started to paint forgeries of the flemesh painter Vermeer's work. He was rather clever in acquiring vintage canvas, stripping off the old paint, and in baking forged paintings he created in an oven to age the oil paints.
So he released some of these "discovered" Vermeers and became the "darling" art dealer by the very same critics that previously had cruxified him and said that he had no talent.
So WWII breaks out and he is selling forgeries of Vermeer to the Nazi's, and after WWII he is tried and convicted for being a traitor because "he conspired with the enemy."
So to defend himself he reveals the truth that he created all these forgeries, but the critics say that this body of work is Vermeer's best work and reiterate that he is an awful painter and not capable of such mastery.
So in prison he paints a forgery to prove his innocence of being a traitor, and he was eventually released.
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A few years ago a documentary film was made called "Twenty Feet From Stardom." It told the story of the back-up singers. In the song "Gimme Shelter" from the Rolling Stones the words "Rape" "Murder" "Is-Just-A-Shout-A-Way" is what sets the hook of the song that makes it iconic. Remove that part of the song and it likely would have been a dud.
Pretty much the unsung hero's: not everyone gets the opportunity to be a "Rock-Star." Some people do art because it is in there blood, for some it is their life, not everybody can be like a "Rock-Star." Many are excluded.
The art world, the music industry, and the literary world are all gated communities.
BTW "Twenty Feet From Stardom" received an Oscar for best documentary.
Cal