Problem: Background: "Free as a Bird" is a song originally composed and recorded in 1977 as a home demo by John Lennon. 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. It was released 25 years after the break-up of the band and 15 years after the death of Lennon. The single was released as part of the promotion for The Beatles Anthology video documentary and the band's Anthology 1 compilation album.
Context: McCartney, Harrison and Starr originally intended to record some incidental background music, as a trio, for the Anthology project, but later realised, according to Starr, that they wanted to record "new music". According to Harrison, they had always agreed that if one of them was not in the band, the others would never replace them and, "... go out as the Beatles", and that the "only other person that could be in it was John."  McCartney then asked Ono if she had any unreleased recordings by Lennon, so she sent him cassette tapes of four songs. "Free as a Bird" was recorded by Lennon in 1977, in his and Ono's Dakota building apartment in New York City, but was not complete. Lennon introduced the song on the cassette by imitating a New York accent and saying, "Free--as a boid" (bird). The other songs were "Grow Old With Me", "Real Love", and "Now and Then". Ono says that it was Harrison and former Beatles road manager Neil Aspinall who initially asked her about the concept of adding vocals and instrumentation to Lennon's demo tapes. Ono stated: "People have said it was all agreed when Paul came over to New York to induct John into the Rock and Roll Hall of Fame, but it was all settled before then. I just used that occasion to hand over the tapes personally to Paul."  McCartney went to Ono's home after the induction ceremony at the Rock and Roll Hall of Fame to listen to, and receive, the Lennon demo tapes; he recalls the meeting with Ono:  She was there with Sean ... and she played us a couple of tracks. There were two newies on mono cassettes which he did at home ... [s]o I checked it out with Sean, because I didn't want him to have a problem with it. He said, "Well, it'll be weird hearing a dead guy on lead vocal. But give it a try." I said to them both, "If it doesn't work out, you can veto it." When I told George and Ringo I'd agreed to that they were going, "What? What if we love it?" It didn't come to that, luckily. I said to Yoko, "Don't impose too many conditions on us, it's really difficult to do this, spiritually. We don't know, we may hate each other after two hours in the studio and just walk out. So don't put any conditions, it's tough enough."  During an interview for the Anthology project, McCartney revealed that he was surprised to learn that Lennon's demos of "Grow Old With Me" and "Real Love" had already been released and were well known by Lennon fans. Starr admitted that when he first listened to the recording he found it very emotional.
Question: why is it called free as a bird
Answer: 

Problem: Background: Art Spiegelman (; born Itzhak Avraham ben Zeev on February 15, 1948) is an American cartoonist, editor, and comics advocate best known for his graphic novel Maus. His work as co-editor on the comics magazines Arcade and Raw has been influential, and from 1992 he spent a decade as contributing artist for The New Yorker, where he made several high-profile and sometimes controversial covers. He is married to designer and editor
Context: Hired by Tina Brown as a contributing artist in 1992, Spiegelman worked for The New Yorker for ten years. Spiegelman's first cover appeared on the February 15, 1993, Valentine's Day issue and showed a black West Indian woman and a Hasidic man kissing. The cover caused turmoil at The New Yorker offices. Spiegelman intended it to reference the Crown Heights riot of 1991 in which racial tensions led to the murder of a Jewish yeshiva student. Spiegelman had twenty-one New Yorker covers published, and submitted a number which were rejected for being too outrageous.  Within The New Yorker's pages, Spiegelman contributed strips such as a collaboration titled "In the Dumps" with children's illustrator Maurice Sendak and an obituary to Charles M. Schulz titled "Abstract Thought is a Warm Puppy". An essay he had published there on Jack Cole, the creator of Plastic Man, called "Forms Stretched to their Limits" was to form the basis for a book in 2001 about Cole called Jack Cole and Plastic Man: Forms Stretched to their Limits.  The same year, Voyager Company published a CD-ROM version of Maus with extensive supplementary material called The Complete Maus, and Spiegelman illustrated a 1923 poem by Joseph Moncure March called The Wild Party. Spiegelman contributed the essay "Getting in Touch With My Inner Racist" in the September 1, 1997 issue of Mother Jones.  Spiegelman's influence and connections in New York cartooning circles drew the ire of political cartoonist Ted Rall in 1999. In an article titled "The King of Comix" in The Village Voice, Rall accused Spiegelman of the power to "make or break" a cartoonist's career in New York, while denigrating Spiegelman as "a guy with one great book in him". Cartoonist Danny Hellman responded by sending a forged email under Rall's name to thirty professionals; the prank escalated until Rall launched a defamation suit against Hellman for $1.5 million. Hellman published a "Legal Action Comics" benefit book to cover his legal costs, to which Spiegelman contributed a back-cover cartoon in which he relieves himself on a Rall-shaped urinal.  In 1997, Spiegelman had his first children's book published: Open Me... I'm a Dog, with a narrator who tries to convince its readers that it is a dog via pop-ups and an attached leash. From 2000 to 2003 Spiegelman and Mouly edited three issues of the children's comics anthology Little Lit, with contributions from Raw alumni and children's book authors and illustrators.
Question: What other works did he produce?
Answer:
an obituary to Charles M. Schulz titled "Abstract Thought is a Warm Puppy".