The Sound of Sunshine is the third studio album by the American funk and disco group KC and the Sunshine Band.
 The album was produced by Harry Wayne Casey and Richard Finch and was released in September 1975 on the TK label.
Pepper J. Keenan (born May 8, 1967), is an American guitarist and vocalist, best known for his work with heavy metal bands Corrosion of Conformity and Down.
 He joined Corrosion of Conformity in 1989, but did not become the lead singer until the recording of "Deliverance" in 1994.
 In 1991 he formed Down with Phil Anselmo of Pantera, Jimmy Bower of Eyehategod, and Kirk Windstein and Todd Strange of Crowbar.
"Rock Your Baby" is the debut single by George McCrae.
 Written and produced by Harry Wayne Casey and Richard Finch of KC and the Sunshine Band, "Rock Your Baby" was one of the landmark recordings of early disco music.
 A massive international hit, the song reached number one on the "Billboard" Hot 100 singles chart in the United States, spending two weeks at the top in July 1974, number one on the R&B singles chart, and repeating the feat on the UK Singles Chart, spending three weeks at the top of the chart in July 1974.
 Having sold 11 million copies, it is one of the fewer than 40 all-time singles to have sold 10 million (or more) physical copies worldwide.
Part 3 is the fourth studio album by the funk and disco group KC and the Sunshine Band.
 The album was produced by Harry Wayne Casey and Richard Finch and was released in October 1976 on the TK label.
"Baby, It's OK" is a song recorded by German group Follow Your Instinct featuring Romanian recording artist Alexandra Stan for their debut studio album, "Animal Kingdom" (2016), and the latter's "Alesta".
 It was made available for digital and physical consumption on 16 August 2013 through Epic Records, Sony Music and Cat Music in Germany and Romania.
 The recording was written by Harry Wayne Casey, Davon Dixon, Patrick Greska, Addis Mussa, Manuela Necker, Andrei Nemirschi, Prodan, David Ritter, Marcian Alin Soare and Rainer Wetenkamp, while production was managed by Greska, Mussa, Ritter and Wetenkamp.
 Musically, "Baby, It's OK" is a dance song that samples elements of KC and the Sunshine Band's "Give It Up" (1983).
Richard Raymond Finch (born January 23, 1954) is an American composer, producer, engineer, and song arranger.
 He is best known as the co-founder, producer and former bass guitar player of KC and the Sunshine Band.
 Along with Harry Wayne Casey, he co-wrote six No. 1 "Billboard" Hot 100 hits.
"Please Don't Go" is a song recorded and released in 1979 on the KC and the Sunshine Band album "Do You Wanna Go Party".
 Originally written in the key of D flat, the song was the band's first love ballad, in which the subject pleads for a second chance.
 Shortly after the song's one-week run at number one, the group broke up and Harry Wayne Casey went solo.
 The song was a number-one hit on the Australian ARIA Charts, the band's fifth and final number-one hit on "Billboard" Hot 100 charts, and the first number-one hit of the 1980s.
 As the band was known as a pioneer of the disco genre, the song was eerily released on the same day as Disco Demolition Night in Chicago, Illinois.
Harry Wayne Casey (born January 31, 1951), better known by his stage name K.C., is an American musician, singer, songwriter and record producer.
 He is best known for his band, K.C. and the Sunshine Band, and as a producer of several hits for other artists.
"You Can Have It All" is a song originally written by Harry Wayne Casey and performed by George McCrae.
 It was notably covered by American indie rock band Yo La Tengo and released as a single from their 2000 album "And Then Nothing Turned Itself Inside-Out".
"I'm Your Boogie Man" is a song written and produced by Harry Wayne Casey and Richard Finch, and performed by Casey's band KC and the Sunshine Band from the band's fourth album "Part 3" (1976).

Question: Between Pepper Keenan and Harry Wayne Casey, who has worked with more artists?
Answer: Harry Wayne Casey