I Know Why 
Subtitle
And So Do You
Voice
English
Instrumentation
Piano
Guitar
Refrain
Why do robins sing in December
Composer
Harry Warren
Lyricist
Mack Gordon
Performer
Glenn Miller
Copyright (this edition)
1941
Original Copyright
1941
Citation
“I Know Why ,” SCPL Sheet Music Catalog, accessed November 22, 2024, https://sheetmusic.santacruzpl.org/items/show/34519.