"They Say It's Wonderful" is a #popular #song written by #IrvingBerlin for the musical #AnnieGetYourGun (1946), where it was introduced by #EthelMerman and #RayMiddleton. A #filmVersion in 1950 again featured the song when it was performed by #HowardKeel and #BettyHutton.
https://www.youtube.com/watch?v=tUnm-lxHn2A