"Sittin' here in la la/ Waitin' for my ya ya," Lee Dorsey sang on his first nationwide hit, "Ya Ya," in 1961, and all across America music lovers soon found themselves asking the question, "Huh?" Listening to the song, it seems fairly obvious that Dorsey's "Ya Ya" was his significant other, who from the sound of things had problems with both punctuality and fidelity, but no one seemed sure just what a "la la" was supposed to be. Bobby Robinson, whose Fire label first released "Ya Ya," claims he got the phrase from hearing some kids playing on a porch swing chanting "Sittin' in the la la," though our protagonist hardly sounds like he's enjoying any playground equipment. Ultimately, it doesn't matter much -- what makes "Ya Ya" a great record is not the lyrics, but Dorsey's supple sugar-and-spice voice, his playful phrasing, and a brilliant backing track featuring Allen Toussaint on piano and Alvin "Red" Tyler on the sax. More than a few folks have covered "Ya Ya" over the years; Ike and Tina Turner toughened up its R&B edges, while Buckwheat Zydeco accentuated the song's Louisiana roots, but the oddest version may well have been from John Lennon, who tacked a brief snippet of himself playing the song at the end of his album Walls and Bridges, with his then 11-year-old son Julian bashing away at the drums.