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.
"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.
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.
"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".
"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).
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.
John Reis (born 1969) and also known by the pseudonyms Speedo, Slasher, and The Swami is an American musician, singer, guitarist, record label owner, and disc jockey.
 He is best known as the singer and guitarist for the rock band Rocket from the Crypt, which he formed and fronted (as Speedo) for the entirety of its career from 1990 to 2005.
 Prior to this he was the guitarist in the post-hardcore band Pitchfork, and also played in Drive Like Jehu during the early 1990s.
 In 1999 he formed the Hot Snakes, and in 2000 also formed the Sultans, in which (as Slasher) he sang and originally played bass before switching to rhythm guitar.
 He played in both these bands until their breakups in 2005 and 2007 respectively.
 He also released a solo recording under the name Back Off Cupids, which was recorded in 1994 but not released until 1999.
 Over the years he has performed in many other musical acts including Conservative Itch, Stacatto Reads, Custom Floor, and Beehive & the Barracudas.
 He is the owner of Swami Records, a label he founded in 1999 (he uses the title The Swami in this capacity).
 He frequently works with bands in a studio capacity and releases albums by many southern California groups through his label.
 He also hosts the "Swami Sound System" program (previously on San Diego radio station 94.9 (KBZT), and now available on Slacker Radio).
 Reis remains an influential figure in the San Diego underground music community and is currently performing with a new band named The Night Marchers.
Ghost Ship is the first album by the San Diego, California, rock and roll band Sultans, released in 2000 by Swami Records.
 Both the band and the album began as "side projects" for John Reis during time off from his main band, Rocket from the Crypt.
 This was also the time at which Reis formed Hot Snakes.
 Reis collaborated with drummer Tony Di Prima, bringing in Rocket From the Crypt guitarist Andy Stamets while Reis himself played the bass guitar (he is normally known as a guitarist).
 The band chose the name Sultans for the project and recorded an introductory EP and "Ghost Ship", both of which were released that year on Reis' newly formed Swami label.
 As Reis has a tradition of using different stage names or pseudonyms in his various projects, he chose to be known as "Slasher" in the Sultans, while Stamets chose the nickname "Black Flame".
"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.
"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: Which musician is younger, Harry Wayne Casey or John Reis?
Answer: John Reis