I agree with those who say the Gay 90s. My elementary school music teacher over forty years ago was real hot on songs from that era. Not only did you have the Romantic era in classical music, but you also have hits such as:
After the Ball
Hello, Ma Baby" (made famous by the Warner Brothers cartoon "One Froggy Night")
Sweet Rosie O'Grady
The Sidewalks of New York
No! No! A Thousand Times No! (made famous by Betty Boop)
The Band Played On
A Bird in a Gilded Cage
Bill Bailey, Won't You Please Come Home?
The Bird on Nellie's Hat
A Hot Time in the Old Town
In the Good Old Summer Time
Little Annie Rooney
Meet Me in St. Louis, Louis
My Wild Irish
Rose
Rock-a-Bye Baby
Ta-Ra-Ra Boom-De-Ay!
Toyland
You're a Grand Old Flag
You're the Flower of My Heart, Seet Adeline (made famous in the "I Love Lucy" sketch)
Oh wait, I thought you meant the
1890s....