Question: The Entertainer references what other song, released in 1973?

<P0-S0> "Westside Story" is the debut single by American rapper and West Coast hip hop artist the Game. <P0-S1>  The song was produced by both Dr. Dre and Scott Storch, and was co-written by Mike Elizondo, Dre, Storch, the Game and 50 Cent. <P0-S2>  It was released in 2004 as the lead single from Game's debut studio album "The Documentary". <P0-S3>  The song debuted at #99 and peaked at #93 on the "Billboard" Hot 100. <P0-S4>  It was an airplay-only release, thus no music video for the song was made. <P0-S5>  Rolling Stone's review of the album described this song as "a kind of L.A. version of "In da Club". <P0-S6>  The Game has stated that this song is a tribute to Tupac Shakur, with a direct reference to him, saying "I got +California Love+ fuckin' bitches to that Pac shit." <P0-S7>  The Game also makes references to Tupac's songs, "California Love" and "Against All Odds". <P0-S8>  Other references include: Nate Dogg, Tha Dogg Pound (D.P.G.) and their song "New York", Westside Connection, Michael Jackson and his album "Thriller", DJ Pooh and Kool G Rap. <P0-S9>  There is a remix featuring Snoop Dogg singing the hook and a version with both Snoop Dogg and 50 Cent on it. <SEP> <P1-S0> "Waiting for Superman" is a song co-written by Chris Daughtry for his band Daughtry's fourth studio album, "Baptized". <P1-S1>  It was released as the lead single from the album on September 17, 2013. <P1-S2>  The song's title and lyrics are references to the comic book superhero Superman and includes other references to the comic, including Lois Lane and Metropolis. <SEP> <P2-S0> "The Entertainer" is a single by singer Billy Joel released as the only single from his 1974 album "Streetlife Serenade". <P2-S1>  The song peaked at #34 on the US charts, a Top 40 hit for Joel that year. <P2-S2>  The song is a cynical and somewhat satirical look at the fleeting fame of a musician and fickle public tastes ("Today I am your champion / I may have won your hearts / But I know the game / You'll forget my name / And I won't be here / in another year / if I don't stay on the charts"); this theme would be examined in the later song "It's Still Rock and Roll to Me". <P2-S3>  Another verse in the song references the shortening of Joel's song, "Piano Man", from 5 minutes and 38 seconds to 3 minutes and 5 seconds to fit a radio slot, referenced by the lyrics "It was a beautiful song, / but it ran too long / If you're gonna have a hit, you gotta make it fit / So they cut it down to 3:05." <P2-S4>  Additionally, the timing printed on the label of the 7" release of "The Entertainer" was 3:05, although the actual 45 length was 3:11 (while the album length was 3:41). <P2-S5>  In the single version, Verse 3 (which starts at 1:02 in the album version) is edited out, and Verse 2 (which starts at 0:40) contains a steel guitar in its second half, which is actually featured in the second half of the "third" verse in the album version; indeed, on the single mix, the instrumental crescendo of the album version is anticipated by bringing the fuller instrumentation of Verse 3 under the vocals of Verse 2. <P2-S6>  As a result of this, the slightly emptier original instrumentation of Verse 2 (which includes a downward slide on the synth) and the vocals of Verse 3 are completely omitted, while the instrumentation of Verse 3 (featuring the steel guitar) does appear, but earlier. <SEP> <P3-S0> "Piano Man" is the first single released by Billy Joel. <P3-S1>  It was released on November 2, 1973, and has been included on several subsequent albums. <P3-S2>  Joel's first major hit and his signature song, the song peaked at #25 on the "Billboard" Hot 100 chart in April 1974. <P3-S3>  In 2016, the Library of Congress selected "Piano Man" for preservation in the National Recording Registry for its "cultural, historic, or artistic significance."