All in proper time, confessions included, otherwise it doesn't count, count!
Haydn certainly composed both Armide and Orpheo (as Durazzo, Gluck etc) but he possibly could not find enough time for theatricals while in London since he was not there most of 1791-92 as my, now famous, timeline confirms.
He did stage his Orpheo though, didn't he?
With Weichsel and his sister Billington participatiing according to "A Biographical Dictionary of Actors, Volume 15, Tibbett to M. West" by Philip H. Highfill,Kalman A. Burnim,Edward A. Langhans
and the following data as well:
28 February 1792 Covent Garden
Orpheus and Eurydice.
By Francis Gentleman (librettist) and Christoph Gluck (composer).
Opera.Printed for T. Cadell (1792).
[LS V.ii.1431. Adalbert Gyrowetz composed the overture; additional music composed by William Reeve. Other songs drawn from numerous composers. This opera, which was first performed at the Smock Alley Theatre, Dublin (3 January 1784), was shortened for afterpiece performance as of 13 March 1792.]
(The composer's name possibly escaped the censor's attention. Anyway Haydn was still in London-propably-bohemian Gyrowetz one of his students and Francis Gentleman had passed away in 1784.)
BTW my version is "Everything is possible with music" (post #6 of
http://www.online-literature.com/for...d.php?p=588533, late 2008) and I just don't know (I do now) how or when it was planted in my memory.
The truth, the whole truth and nothing but, Robert!