Joe McPhee on alto saxophone and pocket trumpet, Fred Longberg-Holm on cello and electronics, and Michael Zerang on percussion. CD

The Roots return with their first album on Def Jam – a rich batch of soulful, heavier moods, cultural reflection, and some incredible modern Philly funk playing behind the thoughtful rhymes – probably the deepest album to appear on Def Jam in the past decade or so! Game Theory shares a tendency with their earlier masterwork Things Fall Apart in its way of applying an uplifting, riveting groove to tracks with some genuine hurt and despair. Sonically, Game Theory is its own animal. We NEVER would have pegged this record for the Def Jam debut – it's way too good! Tracks include the PE-referencing "False Media", "Game Theory" feat Malik B, the single "Don't Feel Right" feat Maimounta Youssef, "In The Music" feat Malik B & Porn, "Take It There" feat Wadud Ahmad, "Baby" feat John-John of Nouveau Riche, "Here I Come" feat Dice Raw of Nouveau Riche & Malik B, "Long Time" featuring Peedi Peedi & Bunny Sigler, "Clock With No Hands" feat Mercedes Martinez of Jazzyfatnastees, "Can't Stop This" and more. CD

De La Soul take on the world of hip hop with a record that's very much at the top of their game – leaner in production than before, but at a level that also brings a bit more bite to their rhymes – a good thing too, as the group take on some of their contemporaries as they assess the state of hip hop in the shadow of the 21st Century! The shift from previous records is almost like that taken by Tribe Called Quest on Low End Theory – focusing their music, while still throwing in some of their trademark skits – and maybe even making the group sound more serious, yet never in some of the "too hard" styles that they rail against on the set. The set has two key moments for the up-and-coming generation – great cut "The Bizness", with a guest appearance by Common, and "Big Brother Beat" with help from Mos Def – next to other tracks that include "Supa Emcees", "Itzsoweezee", and "Betta Listen". CD

De La Soul take on the world of hip hop with a record that's very much at the top of their game – leaner in production than before, but at a level that also brings a bit more bite to their rhymes – a good thing too, as the group take on some of their contemporaries as they assess the state of hip hop in the shadow of the 21st Century! The shift from previous records is almost like that taken by Tribe Called Quest on Low End Theory – focusing their music, while still throwing in some of their trademark skits – and maybe even making the group sound more serious, yet never in some of the "too hard" styles that they rail against on the set. The set has two key moments for the up-and-coming generation – great cut "The Bizness", with a guest appearance by Common, and "Big Brother Beat" with help from Mos Def – next to other tracks that include "Supa Emcees", "Itzsoweezee", and "Betta Listen". LP, Vinyl record album

Kendrick Lamar takes wider creative left turns than ever before on To Pimp A Butterfly – with a funk steeped production style that filters tried-and-true P Funk influences through leftfield modern beatcraft styles, inspired by cats like Madlib to Thundercat, the latter of whom is an official contributor. Fresh material from an increasingly pivotal figure – who may not be revolutionizing the game on the level of the heavy critical praise he's heaped with, but he's certainly marching to his own beat, rather than chasing hits! Includes "Wesley's Theory" with George Clinton & Thundercat, "King Kunta", "These Walls" with Bilal, Anna Wise & Thundercat, "Aright", "For Sale?", "Institutionalized" with a Slick Rick-homage of a guest verse by Snoop Dogg (sign us up for any record that gives props to The Ruler...and extra points for transplanting that style of flow to Compton), "Momma", "Hood Politics", "The Blacker The Berry", "How Much A Dollar Cost" feat James Fauntleroy & Ronald Isley, "Mortal Man" and more. LP, Vinyl record album