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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 Recording Industry Association of America (RIAA). It has sold 839,000 copies domestically and one million copies worldwide.

Aly & AJ's debut studio album, Into the Rush, was released on August 16, 2005, and certified Gold by the RIAA in March 2006. One of the album's singles, "No One", was featured in the Walt Disney Pictures feature film Ice Princess and its soundtrack. The song "Do You Believe in Magic", written, composed and originally recorded by The Lovin' Spoonful under John Sebastian, added a rock edge to the album. This cover was used in the soundtrack of the made-for-TV Disney Channel original movie, Now You See It..., in which Aly had a starring role as Allyson Henlen. "Do You Believe in Magic" became their first single to enter the top 20 of the Canadian Hot 100 chart, peaking at No. 23 and at No. 2 on the U.S. Billboard Hot Singles Sales. Into the Rush has sold 839,000 copies in the United States and one million copies worldwide. The album received positive reviews from critics. Fran Grauman from About.com gave the album a four star rating, praising Aly and AJ's "ton of talent" and "experience". Allmusic gave the album a mixed review, saying it "doesn't venture further than offering a few empowering ballads", to hand them 2.5 stars after. AMG does praise them for having a real singing ability, citing "Aly & AJ can actually sing - their vocals have more personality than prefab Disney hopefuls like Hayden Panettiere or Caleigh Peters - and the arrangements are slick without resorting to flashily empty pap." The review finishes by remarking, "Into the Rush is listenable, likeable and more about being memorable than being a Disney product." The album became the 112th best-selling album in the United States in 2006, earning it a place as No. 112 on the Billboard 200 end of the year chart of 2006. The sisters have been involved in various Walt Disney Records projects. The "Aly & AJ Concert" took place on July 24, 2005 at the Henry Fonda theater in Hollywood, California. The aired concert was cut to five songs and interviews, and included songs from Into the Rush. The sisters opened for The Cheetah Girls in December 2005, on the Cheetah-licious Christmas Tour. The album was re-released in August 2006 with three new songs, including the chart selection "Chemicals React" and two new versions of "Collapsed" and "Something More". It was also released in the United Kingdom. The sisters released their second studio album, the Christmas-themed Acoustic Hearts of Winter, on September 26, 2006. On the album, Aly & AJ recorded traditional Christmas songs. In late 2007, the sisters recorded three more original Christmas-themed selections. Acoustic Hearts of Winter debuted at No. 78 on the Billboard Hot 100, selling over 19,000 copies in its first week. The album also charted the U.S. Billboard Top Holiday Albums, debuting at No. 14. The holiday album later sold over 110,000 copies in the United States.

Entity:
Aly & AJ