I joined the ranks of Wikipedia editors on October 27, 2014, after performing in the chorus in the "New World premiere" of Amleto, by Franco Faccio, produced by Opera Southwest and performed at the Journal Theater of the National Hispanic Cultural Center, Albuquerque, New Mexico, on October 26 and 31, and November 2, 2014.
That is why my first editorial ventures were on the Amleto page of Wikipedia, which was already some 8 years old by the time I got my fingers involved.