 In addition, although Clapton had contributed to "Wonderwall Music" earlier in the year, "Sour Milk Sea" is the first example of him and Harrison sharing the lead guitarist's role on a recording.Later in 1968, the pair co-wrote Cream's final hit single, "Badge", while their guitar combination would be a feature through much of Harrison's solo career, as well as on Derek and the Dominos' first single, "Tell the Truth".For the single's B-side, Lomax recorded his composition "The Eagle Laughs at You".