Answer the question at the end by quoting:

Rudolph Van Gelder (November 2, 1924 - August 25, 2016) was an American recording engineer who specialized in jazz. Regarded as the most important recording engineer of jazz by some observers, Van Gelder recorded several thousand jazz sessions, including many recognized as classics, in a career which spanned more than half a century. Van Gelder recorded many of the great names in the genre, including John Coltrane, Miles Davis, Thelonious Monk, Sonny Rollins, Art Blakey, Joe Henderson, Freddie Hubbard, Wayne Shorter, and Horace Silver, among many others. He worked with many record companies but was most closely associated with Blue Note Records.
In 1967, Alfred Lion retired from running Blue Note, and the company's owners, Liberty Records (from 1965), began to use other engineers more regularly. Prestige, too, had started to use other studios a few years earlier. Van Gelder remained active in music recording, working as the engineer for most of Creed Taylor's CTI Records releases, a series of proto-smooth jazz albums that were financially successful, but not always well received by critics.  Though his output slowed, Van Gelder remained active as a recording engineer into the new century. In the late 1990s he worked as a recording engineer for some of the songs featured on the soundtrack to the TV Show Cowboy Bebop. From 1999, he remastered the analog Blue Note recordings he made several decades earlier into 24-bit digital recordings in its RVG Edition series and also a similar series of remasters of some of the Prestige albums he recorded for its current owners, Concord Records. He was positive about the switch from analog to digital technology. He told Audio magazine in 1995:  The biggest distorter is the LP itself. I've made thousands of LP masters. I used to make 17 a day, with two lathes going simultaneously, and I'm glad to see the LP go. As far as I'm concerned, good riddance. It was a constant battle to try to make that music sound the way it should. It was never any good. And if people don't like what they hear in digital, they should blame the engineer who did it. Blame the mastering house. Blame the mixing engineer. That's why some digital recordings sound terrible, and I'm not denying that they do, but don't blame the medium.  Van Gelder resided in Englewood Cliffs into this century. He died at his Engelwood Cliffs home on August 25, 2016.

What musicians did he work with in his later career?

Van Gelder remained active in music recording, working as the engineer for most of Creed Taylor's CTI Records releases,



Answer the question at the end by quoting:

Anyanka "Anya" Christina Emanuella Jenkins is a fictional character created by Joss Whedon for the television series Buffy the Vampire Slayer. She also appears in the comic book series based on the television show. Portrayed by Emma Caulfield, the character appears as a guest star in the third and fourth seasons of the show before becoming a series regular in the show's fifth, sixth, and seventh seasons.
Anyanka arrives at Sunnydale High in 1998 (in the episode "The Wish") as a student named Anya Emerson. She's come to Sunnydale in response to the distress of Cordelia, who is upset after catching her boyfriend, Xander Harris, kissing their friend Willow. After some prompting, Cordelia states: "I wish that Buffy Summers had never come to Sunnydale." Anya shows her true demon face to Cordelia and says, "Done." and the world changes. Now they're in an alternative reality in which Buffy has not come to Sunnydale and the vampire population has multiplied and gained in power. Giles meets with Cordelia before she dies and manages to discern what has happened. He subsequently summons Anyanka and destroys her necklace. As a result, Anya is made mortal again and the world returns to normal.  Caulfield said, "As far as I know, I don't think Joss Whedon ever intended to have Anya around for more than one episode." However, Anya returns in the episode "Doppelgangland", duping Willow into assisting in a failed magical attempt to recover the necklace which was her power center, lost when Giles destroyed it to reverse the wish granted for Cordelia. When these efforts fail, she is forced to continue living as a typical high school student. Now with human feelings, she yearns to attend the school prom in spite of her abhorrence of all men; ironically, her only hope for a date is the last man she was sent to punish, Xander. Caulfield says, "[Whedon] found this great way to have her interact with the storylines that had developed throughout the entire [third] season."  Anya develops feelings for Xander and asks him out again just before graduation. Her romantic plans are foiled when he tells her of the Mayor's plan for his own "Ascension", a transformation into pure demon, at the graduation ceremony. Anya decides to flee Sunnydale and invites Xander to join her, saying when she thinks something could happen to him, she "feels bad inside, like [she] might vomit". Xander refuses because he's got "friends on the line", and can't abandon them. She leaves without him.  Anya returns to Sunnydale early in Season Four, still infatuated with Xander. She seduces him (in the episode "The Harsh Light of Day"). Her lack of experience with people causes her to make straightforward, often tactless remarks, which soon put her at odds with other Scooby Gang members, especially Willow, who has little trust for the ex-demon. Anya's tactlessness is played both for humor and to highlight the truth in situations where others are reluctant to be frank. This is seen most poignantly in "The Body" when her inability to comprehend Buffy's mother's death leads to inappropriate remarks which at first make others angry, but then allow for catharsis and comfort.

Was she a villian in the program?
She's come to Sunnydale in response to the distress of Cordelia, who is upset after catching her boyfriend, Xander Harris, kissing their friend Willow.