This Blues motif was taken from Buddy Tate's tenor saxophone solo on a tune called No Kiddin'. You'll find it on YouTube on the album called Tate's Date. Buddy Tate, one of the famed Texas Tenors, is probably best know for his work with Count Basie, but I particularly enjoyed listening to recordings of him with Arnett Cobb and also with Illinois Jacquet. One you might enjoy is a live recording with him and Arnett Cobb playing another blues composition by Tate called She Got It.