The Cat Concerto (1947)
The song "On the Atchison, Topeka and the Santa Fe" is played on the piano at one point.
Subject of a $3,000 question
Mentioned in dialogue.
Cartoon's clip shown in the trailer, but tinted in black and white.
Clip shown while AniMat talks about Tom & Jerry.
Jakob and Benjamin Stegelmann introduce the short + shown in full length
seen on a TV screen
The "Tom and Jerry" franchise is #7.