A lot of performers don't want to leave the circuit, the European opera house circuit, partly because most singers don't sing many concerts, or at least not while they are in their prime.
“But friendship is precious, not only in the shade, but in the sunshine of life, and thanks to a benevolent arrangement the greater part of life is sunshine.”
“I derive no pleasure from prosecuting a man, even though I know he's guilty; do you think I could sleep at night or look at myself in the mirror in the morning if I hounded an innocent man?”