I liked your anniversary concert idea..but not just the 10th: also the 20th, 25th, 35th (for COMPANY), 40th, 50th. 75th and 100th.
Just a few weeks ago was the 50th anniversray of the opening of DAMN YANKEES! Here are some other major anniversaries...
1995: sadly the ONLY origial book musical to open in 1995 was VICTOR VICTORIA. (Not a great season.)
1985: BIG RIVER
1980: BARNUM, A DAY IN HOLLYWOOD/A NIGHT IN UKRAINE, 42ND STREET
1970: APPLAUSE, COMPANY
1965: ON A CLEAR DAY..., GOLDEN BOY, DO I HEAR A WALTZ, MAN OF LA MANCHA
1955: DAMN YANKEES!, SILK STOCKINGS, PLAIN AND FANCY, SEVENTH HEAVEN (no not that religious TV show!!)
1945: CAROUSEL, UP IN CENTRAL PARK (not Perk!)
1930: GIRL CRAZY
1905: This Chrismas marks the 100th anniversary of Victor Herbert's delightful MADEMOISELLE MODISTE.
NO NO NANETTE will be 80 years old this fall.
Next March MY FAIR LADY celebrates its 50th followed by THE MOST HAPPY FELLA (May), LIL'ABNER, BELLS ARE RINGING (both November) HAPPY HUNTING and the original (Lilllian Hellman version) of CANDIDE (December.)
We missed the 100th anniversaries of the original WIZARD OF OZ (I am told not much of its score has survived) and BABES IN TOYLAND. (both from 1903.)
Cast albums are NOT "soundtracks."
Live theatre does not use a "soundtrack." If it did, it wouldn't be live theatre!
I host a weekly one-hour radio program featuring cast album selections as well as songs by cabaret, jazz and theatre artists. The program, FRONT ROW CENTRE is heard Sundays 9 to 10 am and also Saturdays from 8 to 9 am (eastern times) on www.proudfm.com