Question: Quincy Jones and Jeff Bass are both what profession?

Context paragraphs:
Lee England, Jr.: Lee England Jr. (born March 15, 1984), is an American violinist, vocalist, arranger, and composer based in Los Angeles, California.  He gained recognition in 2009 after his audition for MTV's "Making His Band" impressed executive producer Sean Combs and landed him a spot on the show as the only "non-traditional" instrumentalist.  Since then, he has been featured on shows like Jimmy Kimmel Live and The Mo'Nique Show, and has shared the stage with musicians like Stevie Wonder, Beyoncé, and Jay Z.  In 2010, England performed at a private party for Michael Jordan.  Jordan was so impressed with England's abilities that he offered him an endorsement deal with his shoe brand.  Most recently, England performed at the Geffen Playhouse and attracted the attention of legendary music producer, Quincy Jones; he was subsequently signed to Jones's management company: Quincy Jones Productions.

Bass Brothers: Bass Brothers is the professional name for the team of Mark and Jeff Bass, the Detroit producers responsible for grooming Eminem in his early days and collaborating on much of his subsequent music.  Before that, they worked with George Clinton.  Tracks from those sessions ended up on the P-Funk All Stars album "Dope Dogs".  Jeff Bass is considered one of the most influential people in Eminem's career.  On their work with Eminem, Mark and Jeff Bass are credited as F.B.T. Productions.

Quincy Jones: Quincy Delight Jones Jr. (born March 14, 1933), also known as "Q," is an American record producer, actor, conductor, arranger, composer, musician, television producer, film producer, instrumentalist, magazine founder, entertainment company executive, and humanitarian.  His career spans six decades in the entertainment industry and a record 79 Grammy Award nominations, and 28 Grammys, including a Grammy Legend Award in 1991.  He is best known for his appearances as himself in "Yakety Yak, Take it Back," "Trash Talk," and "Fantasia 2000."

The Great Wide World of Quincy Jones: The Great Wide World of Quincy Jones is an album led by composer, conductor and arranger Quincy Jones released on the Mercury label.

Quincy – Here We Come: Quincy – Here We Come is an album led by trumpeter Benny Bailey, saxophonist Åke Persson and drummer Joe Harris featuring performances recorded in Sweden in 1959 and originally released on the Swedish Metronome label.  The album was released in the US in 1960 as The Music of Quincy Jones on Argo Records.  The album is one of the earliest devoted solely to the compositions of Quincy Jones and emerged from his work in Europe in the late 1950s.

Quincy's Home Again: Quincy's Home Again is an album led by arranger and composer Quincy Jones featuring performances by Harry Arnold's Orchestra recorded in Sweden in 1958 and originally released on the Swedish Metronome label.  The album was also released in the US as Harry Arnold + Big Band + Quincy Jones = Jazz!  on EmArcy Records.

Jeff Bass: Jeffrey "Jeff" Bass (born on May 16, 1961 in Shaker Heights, Ohio) is a Grammy- and Oscar-winning music producer from Detroit, best known as one half of the Bass Brothers and for his work with Eminem.  Since being signed to a contract at age 19 with Quincy Jones, Bass has recorded, written, and become one of the most sought-after producers in the music industry.  A prime mover in establishing the career of Eminem, Jeff’s deft touch influenced the artist’s distinctive sound.  He co-wrote the Oscar-winning song, "Lose Yourself", featured in the movie "8 Mile" and went on to win numerous Grammy awards for his long-time collaboration with Eminem.

Quincy Jones Explores the Music of Henry Mancini: Quincy Jones Explores the Music of Henry Mancini is a 1964 studio album by Quincy Jones, of music composed by Henry Mancini.

Basie One More Time: Basie One More Time (subtitled Music from the Pen of Quincy Jones) is an album by pianist and bandleader Count Basie performing the compositions and arrangements of Quincy Jones recorded in late 1958 and early 1959 and originally released on the Roulette label.

Jake Bass: Jake Bass (born December 13, 1989 in Detroit) is an American composer and music producer.  Jake is the son of Jeff Bass who is half of the Bass Brothers production team that discovered Eminem.  Jake has produced tracks for Bizarre (rapper) from D12 including his song "Fat Boy" off the Blue Cheese & Coney Island record.  He has also worked closely with deaf rapper Sean Forbes producing all of his tracks and performing live with him.  They released a full-length album in the fall of 2012 with all songs produced by Bass called "Perfect Imperfection".  Later that year, Jake and his father Jeff Bass composed the music for Chrysler's Big Finish 2012 ad campaign.  Jake also composed the music for the Ovation (TV channel) television series, "Motor City Rising" in 2012.  Bass then released his debut single titled, "One" in October 2013 which featured two instrumental songs as well as a music video Directed by Stefan Vardon.  In December 2013, Jake released his full-length debut instrumental album "1989".  In July of 2016 Bass released his second instrumental album "My City: Detroit."

Supporting paragraphs: Jeff Bass Quincy Jones
Answer: music producer