While a small number of outsider musicians became notable because they have few musical skills, such as Florence Foster Jenkins, an American soprano who sang ear-splitting renditions of compositions far outside her range, the majority of outsider artists are appreciated for their unique, uncompromising, and creative music. In some cases, outsider musicians have characteristics such as mental illness or a reclusive lifestyle that may influence their musical style, such as Daniel Johnston, who suffers from bipolar disorder, Wesley Willis, who had schizophrenia, and Pink Floyd founding member Syd Barrett, with an uncertain psychiatric condition that may have been drug-induced
Daniel Johnston toca "Casper, the friendly ghost" num sítio qualquer em NYC. Figura lendária do underground de Austin, maniaco-depressivo, centenas de letras sobre Laurie Allen, uma "teen crush" que ele nunca esqueceu. Um wako.