For this record, she collaborated with multiple producers, including Marcel Botezan, Sebastian Barac, Thomas Troelsen, Alex Cotoi and Vlad Lucan.

Upon its release, the album received positive reviews from music critics, who commended that Inna showcased her versatility as an artist, but noted the songs lacked innovation and were similar to her past material.

[9][12] The album's Japanese release followed in September 2018, also containing Inna's collaboration with Alexandra Stan and Daddy Yankee on "We Wanna" (2015).

[14] Nirvana is a pop album;[3] it opens with Inna's collaboration with Romanian singer Erik on "Ruleta", which is an English and Spanish language EDM and reggaeton-influenced song with touches of Indian and Caribbean music.

[20] "Tropical", Nirvana's fourth track, features a trumpet in its instrumentation along with uncredited male reggae vocals; Jonathan Currinn of CelebMix identified the song as one of the album's highlights.

[21] Parts of tropical pop song "Hands Up" showcase Inna's falsetto voice, and its love-themed lyrics contain various metaphors,[22][23] while "Nirvana" is a Latin-inspired club recording, featuring a portion of rap delivered in Spanish during its drop.

[24][25][26] R&B-influenced "Don't Mind" features lyrics in both English and Spanish language,[27][28] and is followed by "Lights", which is influenced by African music.

Currinn praised the majority of the record's material as highlights, concluding: "This whole album is a great collection of tracks, that truly show off Inna's versatility as an artist.

"[28] An editor of French website Just Focus praised the album's singles and selected tracks, although criticizing the lack of originality of other songs.

[37][38] Inna has further been featured on the 2017 tracks "Tu și eu" by Carla's Dreams,[39] and "Nota de plată" by The Motans,[40] which are also included on Nirvana,[3] alongside 2016 promotional single "Cum ar fi?".