Complex sentence: In the early 1980s and in 1999, a stealth transgender musician who had transitioned 10 years earlier did perform in MWMF, and during 1999's Camp Trans event, a number of trans women purchased tickets and were admitted to MWMF.
Split into simpler sentences: In the early 1980s and in 1999, a stealth transgender musician who had transitioned 10 years earlier performed in MWMF. During 1999's Camp Trans event, a number of trans women purchased tickets and were admitted to MWMF.