input: 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.

Answer this question "why is it called free as a bird"
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Question: Nightcrawler (Kurt Wagner) is a fictional superhero appearing in American comic books published by Marvel Comics, commonly in association with the X-Men. Created by writer Len Wein and artist Dave Cockrum, he debuted in the comic book Giant-Size X-Men #1 (May 1975). Nightcrawler is a member of a fictional subspecies of humanity known as mutants, who are born with superhuman abilities. Nightcrawler possesses superhuman agility, the ability to teleport, and adhesive hands and feet.

In the 2008 miniseries X-Infernus, Pixie summons her Souldagger and stabs Kurt in the chest, knocking him out. When Pixie removes her Souldagger, Magik's Soulsword emerges from his chest.  Magik teleports away after taking out Pixie, Mercury, Rockslide, and Beast. Kurt wakes up and stops Pixie from going after her and Pixie breaks down and apologizes for stabbing him. Later the X-Men gather and Kurt is put in charge of a team of X-Men to go help save Magik.  Upon entering Limbo, Kurt, Mercury, Colossus, Rockslide, Pixie, and Wolverine fight their way through many demons. Pixie, Mercury, and Rockslide are horrified at how brutal the older X-Men are towards the demons. An octopus type creature attacks Kurt until Pixie jumps in and kills it with her Souldagger.  Hearing the screams from the castle, Kurt teleports the X-Men into the throne room. Once there, Witchfire turns Colossus and Wolverine against Mercury and Rockslide. Kurt notices Illyana chained to a pillar and she asks him to stab her with Pixie's Souldagger, as it's the only way and he is the only one to do it because he is attuned to magic.He apologizes and he stabs her; at that moment Colossus punches Kurt, and Witchfire finishes making her fifth and final Bloodstone from the now demonic Pixie.  The fact however that Colossus and Wolverine have not killed him, makes Kurt realize they are not fully under her control. Using Pixie's Dagger, Kurt then pulls Illyana's Soulsword from her, and uses it to free Wolverine and Colossus of Witchfire's control. Unfortunately, the demon manages to use the Bloodstones to summon the Elder Gods. Through their combined efforts, the X-Men and Magik managed to banish both Witchfire and the Elder Gods, but not without losing four of the five Bloodstones. Furious at losing another part of her soul, Pixie flees. Being told by Illyana to let her go, Kurt consoles Magik about the theology of a soul, before she teleports them back to Earth. Kurt, along with Colossus, Cyclops, and the former New Mutants team, convinces her to stay with them and join the X-Men.

Using a quote from the above article, answer the following question: What are some other interesting aspects of this article?
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Answer:
Upon entering Limbo, Kurt, Mercury, Colossus, Rockslide, Pixie, and Wolverine fight their way through many demons.