The album features guest contributions by Lil' Kim, Foxy Brown, Babyface, Blackstreet, Teddy Riley, Too $hort, and Puff Daddy. Producers for Reasonable Doubt such as DJ Premier and Ski contribute to a limited number of beats on this album, though the majority of the production is handled by Puff Daddy's production teamThe Hitmen from the Bad Boy label, giving the album a generally glossier sound than its predecessor. It displayed a shift from the mafioso rap themes of his first effort to the so-called "jiggy" era of late 90s hip-hop, often credited to videos and albums from Puff Daddy and his Bad Boy record label's roster of artists including Notorious B.I.G. and Mase. "Reasonable Doubt was like an introduction," Jay-Z told MTV News. "Like, you know, meeting somebody out on the street... Everything, your whole conversation is very general, not too much detail and things like that. Its just that 'In My Lifetime' is more detailed, more in-depth. Much more personal.".
Critical reception
In a contemporary review, Steve Jones of USA Today called In My Lifetime "a rock-solid set with both street and pop appeal". Chicago Tribune critic Soren Baker believed Jay-Z's lyrics "contain a finesse and insight few can articulate as succinctly", while writing that "his use of pop producers Teddy Riley and Sean 'Puffy' Combs will alienate listeners, even as Jay-Z establishes himself as that rare underground rhymer with commercial appeal". Robert Christgau gave the album a two-star honorable mention in his 2000 Consumer Guide book, indicating a "likable effort consumers attuned to its overriding aesthetic or individual vision may well enjoy". He named " Sunshine" and "Real Niggaz" as highlights while calling Jay-Z "arrogant yet diffident, ruthless yet cute—a scary original". Chris Norris from Spin said Jay-Z's raps are often "in search of meaty ideas or distinctive charm—skills without pleasure", and was also critical of the production. "Without one sure, guiding vision," Norris wrote, "the Combs blueprint comes off as either mundane or embarrassing". AllMusic editor John Bush wrote in a retrospective review, "Though the productions are just a bit flashier and more commercial than on his debut, Jay-Z remained the tough street rapper, and even improved a bit on his flow". According to Bush, he "struts the line between project poet and up-and-coming player" while balancing "both personas with the best rapping heard in the rap game since the deaths of 2Pac and Notorious B.I.G.".