"out of place" In "a musical style that regularly features blue notes"?

Page 2 of the 1913 edition of "The Memphis Blues" says "... Song Founded on W.C. Handy's World Wide 'Blue' Note Melody." That evidence of the use of the expression "blue note" is from several years after the earliest evidence of the idea of "blues" music, such as the 1910 article about Johnnie Woods.

"But the earliest published compositions with the word 'blues' in the title have a different sound" Which compositions are you referring to?