Outside of appearing as a coach on The Voice seasons 11, 12, and 14, Alicia Keys has sold millions and millions of albums over the course of her career. Alicia Keys started out her career as a musician when she was only 15 years old. Since then, Alicia has released a total of seven studio albums - all of which were criticial and commercial successes. When it comes to Alicia's hit songs, most fans know her for Billboard Hot 100 #1 singles such as 2001's "Fallin'", 2004's "My Boo" (wish Usher), 2007's "No One", and 2009's "Empire State Of Mind" (with Jay-Z).

Alicia Keys first joined The Voice as a coach in season 11, and she appeared alongside co-stars Blake Shelton, Adam Levine, and Miley Cyrus. Unlike most first-time coaches, Alicia then came back right away for season 12, this time with Gwen Stefani taking over Miley's red chair. During that cycle, Alicia Keys managed to coach a singer, Chris Blue, to win the show. This was very, very impressive considering that it usually takes most coaches a few seasons on The Voice to get their first win. Since then, Alicia was featured on The Voice one more time, in season 14, which happened to be Kelly Clarkson's first year as a full-time coach on the show.

Related: The Voice: Most-Followed Coaches, Ranked By Instagram Followers

Even the most casual fans of The Voice are probably familiar with Alicia Keys' career as a musician, but many might not understand just how successful and aclaimed this superstar is in the music industry. As of 2021, Alicia Keys is estimated to have sold a total of 42 million copies over the course of her seven albums. Her biggest hits were 2001's Songs In A Minor (12 million copies sold), 2003's The Diary Of Alicia Keys (8 million copies sold), 2007's As I Am (5 million copies sold), and 2009's The Element of Freedom (4 million copies sold), and 2012's Girl On Fire (1.3 million copies sold). Alicia's two most recent works were 2016's Here and 2020's Alicia.

When it comes to the critical aclaim of Alicia Keys's career, it should be noted that the singer has been nominated for a total of 29 Grammy Awards and won 15 of them, including coveted trophies such as Best New Artist and Song Of The Year. In both 2019 and 2020, Alicia Keys was asked to host the Grammy Awards ceremonies. There's no word on whether she'd ever come back to The Voice to appear as a coach or at least an advisor, but judging from Alicia's usual easygoing personality, there's always a chance that she might get interested in coming back some day.

Right now, Alicia Keys has been focusing on sharing with her fans the benefits of meditation and creating different projects related to mental health. Recently, YouTube has also announced a brand-new original series featuring Alicia Keys where she will celebrate the 20-year anniversary of her debut album Songs In A Minor. As such, any fans of The Voice wanting to catch up with Alicia Keys can look out for this upcoming digital series.

More: The Voice: How Many Albums Blake Shelton Has Sold In His Career

The Voice season 20 airs Mondays at 8 pm ET/PT on NBC.