[2] 2000and4Eva features guest appearances from Missy Elliott, Yung Baby Tate, Maliibu Miitch and Rico Nasty, as well as production from musicians such as EasyFun and Raf Riley, among others.

[8] The opening track and first single, "Apeshit", has been described as "dynamic in its clean and precise ability to conjoin two different sounds" and "ultimately bungee[ing] between climatic build-ups and dancefloor breakdowns".

[9] The second track, "Little Nokia", has been described as a "predominantly rock song with elements of a sci-fi film's soundtrack"[10] and "embellished with roaring guitars that play as a seamless contrast against Bree's slick vocals and seeping harmonies".

[14] The fifth track, "Rolls Royce" is described as "reggae-infused"[15] and Maliibu Miitch collaboration, "Gucci" is a "powerful yet playful anthem that's celebratory with plenty of cheek.

[17] The second single, "Damn Daniel", a collaboration with American singer and rapper Yung Baby Tate, was released on 30 April 2020 alongside a music video.

[26][27] Timi Sotire of NME described the mixtape as a "bold, belligerent yet vulnerable debut from a versatile pop star-in-waiting", while also noting that it "forcefully challenges the white supremacy that has historically underpinned the music industry's manufacturing of the 'popstar'.

"[15] Aaron Williams of Uproxx noted that Runway's "electro-influenced blend of hip-hop and pop is a sure mood booster for these troubled times," referring to the COVID-19 pandemic.

[30] Elle Evans of Clash described the mixtape as a "fiery and undaunted statement" and wrote that by "creating a bold, dynamic and cohesive body of work, [2000and4Eva] only solidifies Bree Runway's rise to fame.