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| Written by | Buffy Sainte-Marie |
| Date | 1975 |
| Publisher | Caleb Music Co. |
| First | Episode 0912 |
"Letter K Song" is a Sesame Street song performed by Buffy.
On a vaudeville stage, Buffy sings about the letter K while she holds one and dances. Mr. Macintosh accompanies her by doing a soft-shoe routine.