What is this thing called love - Cole Porter

This excerpt of "What is this thing called love" is taken from the 1946 Warner Brothers movie of "Night and Day". The song itself was first published in 1929 and was composed by Cole Porter. The location is in a store selling sheet music, which was the standard format used for gauging the popularity of various songs in those days. The pianist is portrayed by Cary Grant playing the character of Cole Porter, and the melody is sung by Ginny Simms..