Which singer, Phil Lewis or Siouxsie Sioux, released the top single, "Peek-a-Boo"?
Siouxsie Sioux Susan Janet Ballion, better known by her stage name Siouxsie Sioux (/ˈsuːziː suː/ , born 27 May 1957), is an English singer, songwriter, musician and producer. She is best known as the lead singer of the alternative rock band Siouxsie and the Banshees (1976–1996) and the drums-and-voice duo the Creatures (1981–2005). Siouxsie and the Banshees released 11 studio albums and several UK Top 20 singles including "Hong Kong Garden", "Happy House", "Peek-a-Boo", plus a US Billboard Top 25 hit "Kiss Them for Me". With the Creatures, Siouxsie recorded four studio albums and the hit single "Right Now". She has also sung with artists such as Morrissey and John Cale. After disbanding the Creatures in the mid-2000s, she has continued as a solo artist and released "Mantaray" in 2007.
P. F. Sloan P. F. "Flip" Sloan (born Philip Gary Schlein; September 18, 1945 – November 15, 2015) was an American pop-rock singer and songwriter. He was very successful during the mid-1960s, writing, performing, and producing Billboard top 20 hits for artists such as Barry McGuire, The Searchers, Jan and Dean, Herman's Hermits, Johnny Rivers, The Grass Roots, The Turtles and The Mamas & the Papas. Many of his songs were written in collaboration with Steve Barri. His most successful songs as a writer were three top ten hits. Barry McGuire's 1965 "Eve of Destruction", Johnny Rivers' 1966 "Secret Agent Man" and Herman's Hermits' 1966 "A Must to Avoid".