useless trivia: What Word Means: A Part?

Questions

What was the original name of the country music group, The Oak Ridge Boys?

The Country Cut-ups was the original name of what country & western music group?

Scrambled Eggs was the original title of the Beatles’ hit, ‘Yesterday’, however, what was the original title of their hit song, Eleanor Rigby?

Daisy Hawkins was the original song title for which Beatle hit?

What was the name of the childhood pet horse owned by President Franklin D. Roosevelt?