Question: What American music video director worked with the group previously known as 78violet?  
Context: Aly & AJ, known briefly as 78violet (pronounced: "seventy-eight violet") are an American pop rock duo that consists of sisters Alyson Michalka and Amanda Joy Michalka.  They signed a recording contract with Hollywood Records in 2004.  Their debut album, "Into the Rush", debuted at number 36 on the US "Billboard" 200, and was later certified gold by the RIAA.  It has sold 839,000 copies domestically and 1 million worldwide.  Their second album, "Insomniatic", peaked at number 15 on the "Billboard" 200, selling over 39,000 copies in its first week and becoming Aly & AJ's highest debut to date. Nick Lambrou (born 1983 in Poplar Bluff, Missouri, U.S.) is an American music video director/editor.  He made his first major label music video for Goldfinger at the age of 20.  The following year, he directed and edited the live portion of "Live in the Lou/Bassassins" which was certified Gold by the RIAA in late 2005, along with producing and editing a B-Sides & Rarities DVD for the Deftones.  In 2006, he created Berth, a live concert and behind the scenes segment for The Used which was also certified Gold in 2007, and a music video for Bullets and Octane's "Caving in".  He has since been touring around the world with Thirty Seconds to Mars, documenting their 2007 international tour.  In the summer of 2007 he accompanied 30 Seconds to Mars on a trip to the arctic where he documented their shooting of a music video on glaciers and icebergs in Greenland.  In late 2007 he directed and edited a live concert DVD for Saosin entitled "Come Close," and edited a music video for Linkin Park's single "Given Up" in early 2008. Chris Applebaum is an American music video director, who has worked with a diverse range of artists, among them American Hi-Fi, Mariah Carey, Rihanna, Jessica Simpson, Jennifer Paige, Hilary Duff, Aly & AJ, The Mighty Mighty Bosstones, Mandy Moore, Natasha Bedingfield, Fountains of Wayne, Miley Cyrus, Demi Lovato, Selena Gomez and Britney Spears.  He has also directed commercials, most notably the notorious Carl's Jr commercial featuring Paris Hilton.  Thirty of his music videos have become #1 on MTV.  He won MTV's Music Video of the Year in 2007. Anthony Mandler (born April 18, 1973) is an American film director, music video director, television commercial director and photographer.  As a music video director, his most notable and frequent collaborator is Rihanna.  The two have worked on sixteen music videos together throughout her career, beginning with "Unfaithful" in 2006 and most recently "Diamonds" in 2012.  He has also written and directed music videos for many other prominent artists including the Spice Girls, Jay Z, Beyoncé, Eminem, Usher, Shakira, Taylor Swift, The Killers, Selena Gomez, Justin Bieber, 50 Cent, Ne-Yo, Nicki Minaj, Drake, Snoop Dogg, Lenny Kravitz, Cheryl Cole, M.I.A., Mary J. Blige, fun.  and Lana Del Rey. Adnan Khandar (born 17 December 1986) is a Pakistani photographer, cinematographer and music video director.  He is best known for his music videos "Main Sufi Hun" (2013) for which he earned a nomination of Best Music Video Director at 13th Lux Style Awards and Best Music Video at 2nd Hum Awards.  Khandar got his second nomination at 3rd Hum Awards for "Shikva" (2014) in the same category.  In 2015, Adnan won his first Best Music Video Director award at 14th Lux Style Awards. "Take Me" is a song recorded by American music duo Aly & AJ.  It was released on August 18, 2017 as the lead single from the duo's forthcoming EP "Ten Years" (2017).  It serves as their first release since their name change from 78Violet to Aly & AJ, as well as their first release as Aly & AJ in ten years.  The single was quietly released on June 2, 2017, but was taken down quickly after.  "Take Me" was penned by the duo, along with Jamie Sierota and Ryan Spraker. Amanda Joy "AJ" Michalka ( ; born April 10, 1991), often credited as simply AJ, is an American actress, singer-songwriter, and musician.  She was a model prior to becoming an actress, and is best known as one-half of the duo Aly and AJ (formerly 78Violet) with her sister Aly Michalka.  AJ recorded the theme song and accompanying music video for the film "Secretariat", entitled "It's Who You Are."  She also issued a single and video called "All I've Ever Needed" from her 2013 film "Grace Unplugged".  She has also had a successful acting career, and after two seasons in a recurring role as Lainey Lewis on the ABC sitcom "The Goldbergs", she has been promoted to a regular role on the series for the third season onward. Quad City DJ's is an American music group consisting of Jay Ski (Johnny McGowan), C.C. Lemonhead (Nathaniel Orange), JeLana LaFleur and Adam Martin who produced the 1996 hit "C'mon N' Ride It (The Train)", a rap-remix of Barry White's 1974 "Theme from Together Brothers".  The group previously featured Adam "DJ Harpo" Harper who served as the DJ and hype man.  DJ Harpo was forced to leave the group due to complications with osteochondritis that left him unable to perform without substantial pain. The discography of Aly & AJ (formerly 78violet), an American pop rock duo, consists of three studio albums, one video album, seven singles, six promotional singles, ten music videos and various album appearances.  They released their debut studio album "Into the Rush" on August 17, 2005.  The album debuted at number thirty six in the United States, selling over 24,000 copies in its first week and was later certified Gold by the RIAA.  "Into the Rush" earned them the "Contemporary Inspirational Artists of the Year" nomination at the 2006 American Music Awards.  "Into the Rush" has sold 839,000 copies in the United States and 1,000,000 worldwide. Stephen R. Johnson (July 12, 1952 – January 26, 2015) was an American music video director, television director, animator, painter, and writer.  Johnson got his start directing a music video for the song "Girls Like You" by Combonation, which features a young Robin Wright, before moving on to directing videos for popular artists.  Johnson has directed three music videos for Peter Gabriel: "Big Time", "Steam", and "Sledgehammer".  "Sledgehammer" has the distinction of winning nine MTV Video Music Awards, which remains unsurpassed.  In addition, Johnson directed the videos for "Road to Nowhere" by Talking Heads, and "The Bug" and "Walk of Life" by Dire Straits.
Answer: Chris Applebaum