The album features contributions and vocals from Callie Day, Spoonface, Audra Mae, James the Human, Brasstracks, and the West Los Angeles Children's Choir.

In late 2016, Leclercq released a joint single with friend and fellow electronic producer Porter Robinson, "Shelter".

He also frequently cites Daft Punk and The Beatles as constant heavy influences on his songwriting and production, even before he began writing Good Faith.

[7] For his whole life, Leclercq had produced his music, including the entirety of Adventure and the beginnings of Good Faith, mainly out of his studio in his parents basement in Nantes.

While touring in 2018, he was playing a show in Los Angeles and decided to move to Hollywood Hills from France, relocating his studio as well.

He stated that he had put production and release of the album on hold to give himself time to recuperate and "be healthy".

He states that he enjoys both the "spiritual" and "candid, legal" interpretations of the title, and that he found both words to be profound and evocative of the idea behind the album.

Good Faith takes inspiration from R&B, hip hop, gospel, and funk music, while also being influenced by Leclercq's background producing nu-disco, French house, and EDM.

[1] He states he listened to artists that he adjectively describes as "so Good Faith": Tame Impala, Jamie xx, The Zombies, Anderson .Paak, Chance the Rapper, and the Weeknd.

[10] Another technique carried over into the album from previous releases like "Shelter", "Beings", and "Zephyr", is Leclercq's liberal use of "formant shifting".

This causes Leclercq's voice to sound significantly more or less deep(e.g. in "No Fear No More", "Be Fine") while still singing the same pitch.

Leclercq also processes his voice using a pitch correction software to a more distinct degree in Good Faith than in "Shelter" or any tracks off of Adventure.

"[3] Leclercq says that the theme of the album is about a person's love, questioning, and relationship to reality, and the validity of emotion with the benefit of positive hindsight.

[2] He also has said that his mood, mental health and questioning his own joy and enthusiasm have been heavy themes that he wanted to impress into the album.

This preview was released through a new website, goodfaith.world,[15] which contained a video[16] that played the song, along with locations of record stores in four cities: Los Angeles, New York, Ålesund, and Nantes.

[23] The show consists of Leclercq performing alone on stage triggering samples, playing keys, drums, and singing, while accompanied by themed visuals loosely inspired by the types used in the Shelter Live Tour.

A longer North American leg began in October 2019 in Vancouver and ended on 14 December in Austin, Texas, a total of 31 shows.

"[25] An article from London newspaper Evening Standard negatively assessed his use of pitch correction, stating he is "using his voice more like a synth".