"That'll Be the Day" is a song written by Buddy Holly and Jerry Allison
and recorded by various artists including The Crickets, The Beatles
and Linda Ronstadt. Although Norman Petty was given a co-writing credit on it,
he was not actually involved in the composition,
but only in the production of this well-known recording.

Well that'll be the day
When you say good-bye
Yes that'll be the day
When you make me cry
You say you're gonna leave
You know it's a lie
'cause that'll be the day
When I die

Well you give me all your lovin'
And your turtle dovin'
A all your hugs and kisses and your money too
Well uh you know you love me baby
Still you tell me maybe
That someday well I'll be blue

Well oh when cupid shot his dart
He shot it at your heart
So if we ever part then I'll leave you
You sit and hold me and you
Tell me boldly
That someday well I'll be blue