When someone has appeared, acted and functioned as a man, with a male name, for most of a lifetime but then publicly changed name and gender, there seems to be no right choice of name and pronoun that won't annoy someone: and that's a shame when we are (I hope) all absolutely united in our gratitude for the singing and saddened by the death.

FWIW I'm with Michael in considering it appropriate to use the name and pronoun corresponding to the gender at the time of the recording or event in question.

Richard