Question: Obi-Wan "Ben" Kenobi is a fictional character in the Star Wars franchise. Within the original trilogy he is portrayed by Alec Guinness, while in the prequel trilogy a younger version of the character is portrayed by Ewan McGregor. In the original trilogy, he is a mentor to Luke Skywalker, to whom he introduces the ways of the Jedi. In the prequel trilogy, he is a master and friend to Anakin Skywalker.

Obi-Wan Kenobi is a main character in the animated micro-series Star Wars: Clone Wars and the CGI animated series Star Wars: The Clone Wars, voiced by James Arnold Taylor. In both series, Obi-Wan is a general in the Clone Wars, and he and Anakin have many adventures fighting the Separatists. The latter series highlights his numerous confrontations with General Grievous, his adversarial relationship with Dark Jedi Asajj Ventress, his romance with Duchess Satine Kryze, and the return of his old enemy Darth Maul.  In Star Wars Rebels, set five years before A New Hope, Obi-Wan appears as a hologram in the pilot episode "Spark of Rebellion". In the Season 3 episode "Visions and Voices", protagonist Ezra Bridger discovers that Obi-Wan is alive on Tatooine; Obi-Wan's old nemesis Darth Maul finds him as well. In the episode "Twin Suns", Maul is shown wandering the desert of Tatooine searching for Obi-Wan. Maul lures Ezra and uses him to draw Obi-Wan out. Obi-Wan rescues Ezra from dying from heat exhaustion and advises him to stay with the Rebellion. Maul appears and engages Obi-Wan in a lightsaber duel, but Obi-Wan mortally wounds him. With his dying breath, Maul asks Obi-Wan if he is protecting the "Chosen One"; Obi-Wan replies that he is. After Maul's death, Obi-Wan is seen watching over Luke Skywalker from a distance.  In Rebels, Obi-Wan was voiced by Stephen Stanton, who replaced James Arnold Taylor. Rebels creator Dave Filoni, who worked with the character during the full duration of Star Wars: The Clone Wars, said he considered asking McGregor to reprise and voice the role.

Using a quote from the above article, answer the following question: Any other notable appearances?
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Answer: In the Season 3 episode "Visions and Voices", protagonist Ezra Bridger discovers that Obi-Wan is alive on Tatooine; Obi-Wan's old nemesis Darth Maul finds him as well.

Problem: Sun Ra (born Herman Poole Blount, legal name Le Sony'r Ra; May 22, 1914 - May 30, 1993) was an American jazz composer, bandleader, piano and synthesizer player, and poet known for his experimental music, "cosmic" philosophy, prolific output, and theatrical performances. For much of his career, Ra led "The Arkestra", an ensemble with an ever-changing name and flexible line-up. Born and raised in Alabama, Blount eventually became involved in the Chicago jazz scene during the 1940s. He soon abandoned his birth name, taking the name Sun Ra (after Ra, the Egyptian God of the Sun) and developing a complex persona and mythology that would make him a pioneer of Afrofuturism: he claimed he was an alien from Saturn on a mission to preach peace, and throughout his life he consistently denied any ties to his prior identity.

After the move to New York, Sun Ra and company plunged headlong into the experimentalism that they had only hinted at in Chicago. The music was often extremely loud and the Arkestra grew to include multiple drummers and percussionists. In recordings of this era, Ra began to use new technologies--such as extensive use of tape delay--to assemble spatial sound pieces that were far removed from earlier compositions such as Saturn. Recordings and live performances often featured passages for unusual instrumental combinations, and passages of collective playing that incorporated free improvisation. It is often difficult to tell where compositions end and improvisations begin.  In this era, Sun Ra began conducting using hand and body gestures. This system inspired cornetist Butch Morris, who later developed his own more highly refined way to conduct improvisers.  Though often associated with avant-garde jazz, Sun Ra did not believe his work could be classified as "free music": "I have to make sure that every note, every nuance, is correct... If you want to call it that, spell it p-h-r-e, because ph is a definite article and re is the name of the sun. So I play phre music - music of the sun."  Seeking to broaden his compositional possibilities, Sun Ra insisted all band members double on various percussion instruments - predating world music by drawing on various ethnic musical forms - and most saxophonists became multireedists, adding instruments such as flutes, oboes, or clarinets to their arsenals. In this era, Sun Ra was among the first of any musicians to make extensive and pioneering use of synthesizers and other various electronic keyboards; he was given a prototype Minimoog by its inventor, Robert Moog. According to the Bob Moog Foundation: "Sun Ra first met Robert Moog after Downbeat journalist and Sun Ra acquaintance Tam Fiofori arranged for a visit to Moog's factory in Trumansburg in the Fall of 1969....it was during this visit that Moog loaned Sun Ra a prototype Minimoog (Model B), several months before the commercial instrument (Model D) was introduced in March 1970. Ra immediately added the instrument to his repertoire of keyboards, later acquired a second, and featured the Minimoog prominently on many of his recordings of the early 1970s."  Notable titles from this period include The Magic City, Cosmic Tones for Mental Therapy, When Sun Comes Out, The Heliocentric Worlds of Sun Ra, Volume One, Atlantis, Secrets of the Sun and Other Planes of There.

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Though often associated with avant-garde jazz, Sun Ra did not believe his work could be classified as "free music":