The prolific Brazilian pianist and composer Ernesto Nazareth was a master of tango and choro music.
I don't pretend to know much about him, but I find his compositions (such as this one, Odeon) a moving evocation of a foreign time and place.
A quick internet search yielded the information that Nazareth was admitted to an asylum after some 'mental instability'. He shares this dubious honour with jazz greats like Buddy Bolden and Leon Rappolo. Other musicians too numerous to mention have exhibited signs of similar instability.
I wonder if this so-called instability has a link with artistic creativity. Or perhaps it has more to do with the chronic ill-treatment of artists across many societies, where an artist's self-worth can be gradually worn away by misunderstanding and ill treatment. Maybe there is no link at all, and musicians as a group are no more than proportionally represented amongst the 'unstable'.
One thing I know to be true - Bernd Lhotzky is a wonderful pianist!