Co-written by Dave and released in 2005, “Friend or Foe” was the second single from t.A.T.u.’s Dangerous and Moving album. The track features Sting on bass and was promoted with a striking cover photo by Bryan Adams. Promo editions include a UK CD single (TATU5), a US radio promo (TATUFOECDP1), and a rare Taiwanese edition with a promo sticker. A 12″ vinyl promo was also issued in the US, containing exclusive remixes. These items are now highly collectible, particularly the European maxi-CD and the French Part 2 edition. The song’s ambiguous lyrics and high-profile collaborators make it a standout in Dave’s pop-rock collaborations.