Greatest Hits is the first greatest hits album by Canadian country-pop singer Shania Twain, released on November 8, 2004 by Mercury Nashville. The album contains seventeen of Twain's hits, including all of her seven number one hits on the Hot Country Songs chart. Notably absent from the track list is Twain's self-titled debut album, in which no songs were included. Some songs are included in their pop versions such as "That Don't Impress Me Much" and "I'm Gonna Getcha Good!". "Ka-Ching!" was included in the European version of Greatest Hits as the song was a massive hit there.

Shania Twain comes full circle on this album, cowriting 11 out of 12 cuts and proving that she can do more than sing. Once again she crosses over into pop-rock territory with this multiplatinum affair, bringing legions of new fans into the country camp. Peppered with hits such as "Whose Bed Have Your Boots Been Under?" and "Any Man of Mine," Twain's sophomore effort features crisp and clear vocals and country-flavored pop arrangements. Husband and cowriter "Mutt" Lange, known for his production work with hard hitters Def Leppard, has produced a fresh sound for country, enhancing the traditional with a more gritty, gutsy sound; even the more delicate tunes resemble those power-pop tunes from the 1980s. This is music for all occasions: danceable, romantic, and powerful.

Shania Twain is the self-titled debut album by Shania Twain, originally released in 1993. Although not a hit when originally released, Twain's subsequent successful albums gained her legions of fans, which generated more interest in Shania Twain causing it to be certified platinum in the US for shipments of one million copies.

For her 34th studio album, Anne Murray recorded a set of duets with many of her favorite female singers, from Nelly Furtado to Sarah Brightman. There are a number of country duet partners here, such as Shania Twain, Emmylou Harris, and Martina McBride, but there are even more pop-oriented women singing with Murray, encompassing the likes of Celtic Woman and Celine Dion. This makes perfect sense, as Murray's always straddled the pop-country fence effortlessly. Her singing on Duets: Friends and Legends is just as effortless. Now in her fifth decade as an active recording artist, her voice hasn't lost a beat, sounding just as pure and clear as it did on 1970s "Snowbird" (done here with a surprisingly relaxed, easy vocal from Brightman, sounding for all the world like a young Olivia Newton-John). The majority of these songs are ones which have been sizeable hits for Murray in the past, most of which work nicely recast as duets, or at least showcases for harmony singing.

Shania Twain entered a self-imposed exile following the supporting tour for 2002's Up!, suffering from a then-undisclosed contraction of Lyme disease. Troubles compounded, as they often do. Twain split from her husband, Robert John "Mutt" Lange, in 2008, a traumatic event on its own that was complicated by the fact that he was her collaborator on the blockbusters The Woman in Me (1995), Come on Over (1997), and Up! This meant she had to start over personally and professionally, which explains the long delay between Up! and Now, which was released in September of 2017. Many trends have come and gone during that 15-year gap and Twain – assisted by not one producer but a roundtable, as is standard for 21st century blockbusters – decides to split the difference between chasing fashion and staying true to her glitzy country-pop.