Displaying a command of pop styles and satire, 10cc showed that they are a force to be reckoned with on their first album. Hooks abound, harmonies shine, and instrumentation is dazzling without being overdone. Though charges of "self-consciously clever" could be leveled at the group, their command of witty, Anglo-styled pop is so impressive that even those criticisms must be weighed against the mastery of styles. All four members sing lead and are talented songwriters, and this leads to a wide variety of styles that add to their vision. Featuring their number one U.K. hit "Rubber Bullets," 10cc wade through ten selections of satire and parody.

Rick Springfield released the big, bold Songs for the End of the World in 2012, just before he received a boost in credibility from Dave Grohl. The Foo Fighters leader featured Springfield in Sound City, his 2013 feature-length love letter to classic rock, and while its accompanying soundtrack wasn't a smash, it did help shift the conventional wisdom on Rick Springfield. Now, he was celebrated for his power pop and arena rock, two things that helped him land a plum role in Jonathan Demme's 2015 film Ricki and the Flash, where he played a puppy dog foil to Meryl Streep's aging lead. Springfield knocked his role out of the park, allowing himself to be vulnerable and funny, two qualities he sometimes avoids on record. Happily, Rocket Science – the 2016 album that is his first since the great Rick renaissance of the 2010s – finds the rocker acting looser than he's been in years, letting his gift for the frivolous sit alongside his yen to explore his spiritual side.

At their best, cover albums have a strange way of galvanizing an artist by returning to the songs that inspired them; the artists can find the reason why they made music in the first place, perhaps finding a new reason to make music. Robert Plant's Dreamland – his first solo album in nearly ten years and one of the best records he's ever done, either as a solo artist or as a member of Led Zeppelin – fulfills that simple definition of a covers album and goes beyond it, finding Plant sounding reinvigorated and as restless as a new artist. Part of the reason why this album works so well is that he has a new band – not a group of supporting musicians, but a real band whose members can challenge him because they tap into the same eerie, post-folk mysticism that fueled Led Zeppelin III, among other haunting moments in the Zep catalog.

A whole sociological study could probably be based around Saigon Rock & Soul, a double-album compilation of killer Vietnamese pop/rock tracks from the late ‘60s to mid-‘70s, but that will be left to more academically minded types in order to focus on the music at hand. The tunes included here were surely the product of Western music's influence, as American soldiers brought the sounds of U.S. rock, pop, and soul along with them over the course of the Vietnam War. By the late ‘60s, a whole subgenre of than nac ("modern music") had emerged, as hordes of young Vietnamese musicians absorbed and emulated the music that arrived from overseas. Besides local clubs, many of the artists featured here performed – and often recorded – at U.S. army bases, where the soldiers made up a major portion of their fan base.