Lyrics:

blue days, black nights, blue tears keep on falling for you dear,now you're gone.blue days, black nights, my heart keeps on calling for you dearand you alone.memories of you make me sorryi gave you reason to doubt me
but no you're gone and i am left here all alone with the blue memoriesi think of you[instrumental]blue days, black nights,i didn't realize
i would miss you the way i doand now somehow i know i will pay for the timesi have made you bluememories of you make me sorryi gave you reason to doubt me
but no you're gone and i am left here all alone with the blue memoriesi think of you
Buddy Holly Blue Days, Black Nights