Question: Which singer is older, Selena Gomez or Peter Cetera?
Context: "After All" is a 1989 "Billboard" Hot 100 hit song performed as a duet by American singer and actress Cher and American singer and bass player Peter Cetera (former lead vocalist of Chicago), released on February 21, 1989, by Geffen Records.  It was used as the love theme for the movie "Chances Are" and was nominated for Best Original Song at the Academy Awards 1989.  The song was also the first North American single release from Cher's nineteenth album "Heart of Stone".  The song appears on Peter Cetera's 1997 album "" and his 2017 album, "The Very Best of Peter Cetera". Selena Marie Gomez ( ; ] ; born July 22, 1992) is an American singer and actress.  Gomez began her career starring in the children's television series "Barney & Friends".  She rose to fame playing the lead role of Alex Russo in the Disney Channel series "Wizards of Waverly Place" (2007–2012).  She also starred in films such as "Ramona and Beezus" (2010), "Monte Carlo" (2011), and "Spring Breakers" (2013). For You is the first compilation album by American singer Selena Gomez.  The album was released on November 24, 2014 through Hollywood Records.  It contains material from Gomez's band Selena Gomez & the Scene, as well as her releases as a solo artist.  "For You" has been described as a "collection" by Gomez, as opposed to a greatest hits album.  The album serves as her final project to be released through Hollywood Records, with whom she released four studio albums and a remix album.  It includes two previously unreleased songs, produced by Rock Mafia, as well as new versions of some previously released recordings.  A digital extended play containing the new material was made available for streaming. One More Story (1988) is the third solo album for music artist Peter Cetera and his second album after leaving the group Chicago.  This album includes the hit "One Good Woman," which made it to number four on the Billboard Hot 100 chart.  It also includes the single "Best of Times".  The album was co-produced by Patrick Leonard and Peter Cetera, and contains an appearance by Leonard's most famous artist at the time, Madonna (appearing on the song "Scheherazade" as 'Lulu Smith').  It also features Pink Floyd guitarist David Gilmour on "Body Language" and "You Never Listen to Me", as well as Oak Ridge Boys bass vocalist Richard Sterban and guitarist/vocalist Bonnie Raitt on "Save Me." "Glory of Love" is a 1986 song by Peter Cetera written and composed by Cetera, David Foster, and Cetera's then-wife Diane Nini, and recorded by Cetera shortly after he left the band Chicago to pursue a solo career.  Featured in the 1986 film "The Karate Kid Part II", it was Cetera's first hit single after he left the team, reaching number one on the "Billboard" Hot 100, and it was included on his 1986 album, "Solitude/Solitaire", which Michael Omartian produced. <ref name="Solitude/SolitaireCD"> </ref> (Cetera released this album to coincide with the theatrical release of "The Karate Kid Part II".) The Stars Dance Tour was the first concert tour by American recording solo artist Selena Gomez to promote her first solo studio album, "Stars Dance" (2013).  Gomez performed songs from her solo debut album, as well as her releases with Selena Gomez & the Scene.  The tour launched on August 14, 2013 and continued until March 9, 2014.  It serves as the first tour of Gomez's career, visiting Europe and Dubai. Stars Dance is the solo debut studio album by American singer Selena Gomez.  It was released on July 19, 2013, by Hollywood Records.  Gomez began planning the project in 2012, at which time she announced that her band Selena Gomez & the Scene would be taking an indefinite hiatus, and continued work into 2013.  She has cited artists such as Britney Spears and Skrillex as influences on the record, which stylistically features EDM and electropop music.  Elements of dubstep, techno, disco and worldbeat have been noted on the album.  Gomez worked with producers such as Rock Mafia and The Cataracs on the album. Peter Paul Cetera ( ; born September 13, 1944) is an American singer, songwriter, and bassist best known for being an original member of the rock band Chicago (1967–1985), before launching a successful solo career.  His career as a recording artist encompasses seventeen albums with Chicago and eight solo albums. Peter Cetera, released in December 1981, is the self-titled first solo release by then-Chicago bassist and lead vocalist, Peter Cetera. "You're the Inspiration" is a song written by Peter Cetera and David Foster for the group Chicago and recorded for their album "Chicago 17" (1984), with Cetera singing lead vocals.  The third single released from that album, it reached number 3 on the US "Billboard" Hot 100 chart in January 1985, and also climbed to the top position on the adult contemporary chart at the same time.  Peter Cetera re-recorded the song for his 1997 solo album "".  That same year he also recorded a single version with the vocal R&B group, Az Yet.
Answer: Peter Paul Cetera