Question: Who wrote the home demo of the song that was first released after the Beatles informally decided to split?

<P0-S0> The break-up of the Beatles was a cumulative process throughout the period 1968 to 1970, marked by rumours of a split and ambiguous comments by the Beatles themselves regarding the future of the group. <P0-S1>  Although in September 1969 John Lennon privately informed the other Beatles that he was leaving the group, there was no public acknowledgement of the break-up until Paul McCartney announced on 10 April 1970 he was leaving the Beatles. <SEP> <P1-S0> The Danish rock band Nephew has released five studio albums, three live albums, five EPs, one compilation album, one box set, and nineteen singles. <P1-S1>  The band was formed in 1996 by Simon Kvamm, Kristian Riis, Jonas Juul Jeppesen, and Søren Arnholt. <P1-S2>  In 1998, Jeppesen, who was until then the bassist in the band, left the band and was replaced by the current bassist Kasper Toustrup. <P1-S3>  That year, they proceeded to release two demo albums, "Tunes" and "Things to Do"; the demo "Downtown Europe" was released in 1999. <P1-S4>  In 2000, the band debuted with "Swimming Time", on the small label Martian Records. <P1-S5>  The album was received well by both critics and fans, but despite the band's success, the members got bored and decided to take a break. <P1-S6>  During their 2001 farewell concert in Germany, the band rediscovered their passion for music and decided to stay together. <P1-S7>  After being signed to Copenhagen Records, the band released their second studio album "USADSB" in 2004, which was very well received and is seen as their "breakthrough" album. <P1-S8>  It gained double platinum status in Denmark, and aside from there has been released in Japan, Germany, and Norway. <P1-S9>  Later in 2004, the "En Wannabe Darth Wader" single release came to be, which contains both the Danish and English versions of Nephew's song "En Wannabe Darth Vader". <SEP> <P2-S0> In the Beginning (Circa 1960) is the first consolidated American packaging of the 1962 German album by Tony Sheridan and The Beatles (credited as The Beat Brothers), called "My Bonnie". <P2-S1>  "In the Beginning (Circa 1960)" was released by Polydor Records in 1970 (catalogue number 24-4504.) <P2-S2>  It was recorded in Hamburg in 1961. <P2-S3>  This album was originally released as "The Beatles' First" in Germany in 1964 and in the United Kingdom in 1967. <P2-S4>  Previous American releases of this material in LP form was split in 1964 between MGM Records and Atco Records. <P2-S5>  Polydor (which eventually absorbed MGM) established its United States branch in 1969 which explains why this package was released much later in The Beatles' history. <P2-S6>  Most of the tracks feature vocals by Sheridan. <P2-S7>  The album was released only four days before "Let It Be", The Beatles' final studio album. <P2-S8>  This is therefore the last Beatles compilation album released whilst the band were still releasing studio albums. <P2-S9>  All subsequent releases of Sheridan/Beatles/Beat Brothers material are simply repackages of the same tracks. <P2-S10>  This album is available in a slightly altered CD by Polydor without the inaccurate "(Circa 1960)" subtitle and with both parts of "Ya Ya". <P2-S11>  Only part one of that track was released on this LP. <P2-S12>  "In the Beginning (Circa 1960)" was also the only Beatles album not owned by EMI though Universal's purchase of Polydor and the Beatles' main catalogue put them under the same ownership. <SEP> <P3-S0> "Free as a Bird" is a song originally composed and recorded in 1977 as a home demo by John Lennon. <P3-S1>  In 1995, a studio version of the recording, incorporating contributions from Paul McCartney, George Harrison and Ringo Starr, was released as a single by the Beatles. <P3-S2>  It was released 25 years after the break-up of the band and 15 years after the death of Lennon.