Question: The artist who came out with GHV2 is referred to as "The Queen of..." what?

Madonna Louise Ciccone ( ; born August 16, 1958) is an American singer, songwriter, actress, and businesswoman.  A leading presence during the emergence of MTV in the 1980s, Madonna is known for pushing the boundaries of lyrical content in mainstream popular music, as well as visual imagery in music videos and on stage.  Referred to as the "Queen of Pop", Madonna is widely cited as an influence by other artists.  She has also frequently reinvented both her music and image while maintaining autonomy within the recording industry.  Besides sparking controversy, her works have been acclaimed by music critics. <SEP>  Maverick and Warner Bros.  Records released it on November 12, 2001, coinciding with the video album, "Drowned World Tour 2001".  A follow-up to "The Immaculate Collection" (1990), "GHV2" contains a collection of singles during the second decade of Madonna's career.  Madonna mentioned that she only included "songs that I could listen to five times in a row" on it.  The album did not contain any new songs, but a promotional single, "GHV2 Megamix", was released to promote it, with remixes by Thunderpuss, John Rocks & Mac Quayle and Tracy Young. GHV2 (an abbreviation of Greatest Hits Volume 2) is the second greatest hits album by American recording artist Madonna.  Another promotional remix album was released alongside, titled "GHV2 Remixed: The Best of 1991–2001". <SEP> Queen + Adam Lambert (sometimes referred to as Q+AL or QAL) is a collaboration between the active members of the British band Queen (Brian May and Roger Taylor) and American vocalist Adam Lambert.  As with all other Queen performances since 1997, longstanding bassist John Deacon has declined to participate in the project due to his retirement.  This is the first long-term collaboration of Queen since the Queen + Paul Rodgers project ended in 2009.  The collaboration originated when May and Taylor appeared on "American Idol" in 2009 when Lambert was a contestant.  They began performing occasionally in 2011, conducted a short European tour in 2012, and in 2014 announced a world tour, the Queen + Adam Lambert Tour 2014–2015 with dates in North America, Australia, New Zealand, Asia, Europe and South America.  In the summer of 2016, the group performed several dates as part of a festival tour in Europe and several dates in Asia.  The next year, the group announced a second worldwide tour scheduled for 2017 and 2018. <SEP> "No Hacen Na" "(English: They Don't Do Anything)" is a song by Puerto Rican reggaetón recording artist Ivy Queen, from her second compilation album, "" (2006).  It was composed by Queen, produced by Filtro Musik.  Forced to release an album with her then-husband who she was going through a divorce at the time due to their multi-album contract with Univision, the song was released as a promotional single on June 10, 2006.  Lyrically the song is telling people that she is ready whenever they are and that isn't scared.  Ivy Queen performed the song on a live edition of the Puerto Rican television program "Sábado Gigante".  The song was believed to be a diss track towards reggaeton hip-hop artist Temperamento and La Nina who released a diss track toward Queen that resembled the lyrics of "Quiero Bailar".  Many artist have covered this song including Angel & Khriz and Arcángel.