19 is the debut studio album by English recording artist Adele first released on 28 January 2008, through XL Recordings. Following Adele's graduation from the BRIT School for Performing Arts & Technology in May 2006, she began publishing songs and recorded a three-song demo for a class project and gave it to a friend. The friend posted the demo on Myspace, where it became very successful and led to interest from XL Recordings. This led to Adele signing a recording contract with the label and providing vocals for Jack Peñate, during this session for Peñate's song she met producer Jim Abbiss, who would go on to produce the majority of her debut album.

Adele wrote most of the album's material solely, but did work with a select few writers and producers including Jim Abbiss, Eg White and Sacha Skarbek. Their collaborations created a blue-eyed soul album with lyrics describing heartbreak and relationship. Upon release, 19 received generally positive reviews from critics, who praised the singer's vocals and noting her as having the "potential to become among the most respected and inspiring international artists of her generation." 19 was also won and was nominated for numerous accolades including a Mercury Prize, and the Grammy Award for Best New Artist.[4] The second single, "Chasing Pavements" also won the Grammy Award for Best Female Pop Vocal Performance at the 51st Annual Grammy Awards.

19 was a commercial success, debuting at number one on the UK charts during its release, and peaking at number four on the US Billboard 200 in 2012. The album is certified 7× Platinum in the UK, and 3× Platinum in the US. Worldwide sales for the album are at an estimated 7 million copies.

21 is the second studio album by English singer Adele. It was released on 24 January 2011[1] in most of Europe, and on 22 February 2011 in North America. The album was named after the age of the singer during its production. 21 shares the folk and Motown soul influences of her 2008 debut album 19, but was further inspired by the American country and Southern blues music to which she had been exposed during her 2008–09 North American tour An Evening with Adele. Composed in the aftermath of the singer's separation from her partner, the album typifies the near dormant tradition of the confessional singer-songwriter in its exploration of heartbreak, self-examination, and forgiveness.

Adele began writing 21 in April 2009, when still involved in the relationship that subsequently inspired the record. Dissatisfied with once again portraying herself as the musical tragedian of her debut, she had intended to compose a more upbeat and contemporary follow-up. However, studio sessions ended prematurely due to a lack of inspiration. She resumed production immediately after the breakdown of her relationship, channelling her heartbreak and depression into her songs. Adele collaborated with various songwriters and producers, including Columbia Records co-president Rick Rubin, Paul Epworth, Ryan Tedder, Jim Abbiss, and Dan Wilson.

Praised by critics for its understated production, vintage aesthetic, and Adele's vocal performance, 21 defied the modest commercial expectations of her indie record label XL Recordings and became a massive hit in 2011. The album topped the charts in more than 30 countries and appeared in the 2012 edition of Guinness World Records. In the United Kingdom, it is the best-selling album of the 21st century and fourth best-selling album of all time, while its 23-week tenure atop the UK Albums Chart is the longest by a female solo artist. In the United States, the album held the top position for 24 weeks, longer than any other album since 1985 and the longest by a female solo artist in Billboard 200 history, and was certified Diamond by the RIAA. It is one of the top 100 best-selling albums in the United States and earned the distinction of top Billboard 200 album of all time. Singles "Rolling in the Deep", "Someone like You" and "Set Fire to the Rain" became worldwide number-one hits, while "Rumour Has It" charted in the top 20 across Europe and North America.

Globally, 21 was the biggest selling musical release for both 2011 and 2012, and helped revitalise lagging sales of the UK and US music industry. By July 2014, the album had sold 30 million copies worldwide. Critics hailed the album as a shift from the overtly sexual and musically bombastic status quo, and attributed its success to its deeply autobiographical yet universal songs. Shortlisted for the 2011 Mercury Prize, 21 won the 2012 Grammy Award for Album of the Year and the Brit Award for British Album of the Year.)

25 is the third studio album recorded by English singer and songwriter Adele. It was released on 20 November 2015, through XL Recordings. Following the release and international success of her second studio album 21 (2011), Adele considered quitting the music industry and going out on a positive note. However, she decided to take a hiatus instead and raise her son. During her sabbatical, she suffered from writer's block and rescheduled studio sessions for a new album, fearing she had lost her ability to write songs. In 2013, Adele had a breakthrough and the material that eventually became 25 manifested, with writing and recording continuing through 2015.

Titled as a reflection of her life and frame of mind at 25 years old, 25 is a "make-up record". The album's lyrical content features themes of Adele yearning for her old self, her nostalgia, and melancholy about the passage of time as well as themes of motherhood and regret. In contrast to Adele's previous work, the production of 25 incorporated the use of electronic elements and creative rhythmic patterns, with elements of 1980s R&B and organs. Like 21, Adele collaborated with producer and songwriter Paul Epworth and Ryan Tedder, along with new collaborations with Max Martin and Shellback, Greg Kurstin, Danger Mouse, the Smeezingtons, Samuel Dixon, and Tobias Jesso Jr.

Amid heavy promotion and an anticipated release, the album was released to critical and commercial success. 25 debuted at number one and became the fastest selling album in history in both the UK and the US. Selling 3.38 million copies in its first week of release in the latter, it became the largest single sales week for an album since Nielsen Music began tracking point-of-sale music purchases in 1991. The album is said to have impacted the music industry, with journalists reporting that 25 was able to encourage the public to return to buying physical album copies, instead of downloading or streaming.