In April 2016, she released her second mixtape, "2090's", which featured 15 tracks. In October of that year, she released a collaborative single with Kehlani called "No Service in the Hills". Ambré again appeared alongside Kehlani at the latter's "Tsunami Christmas" event in December 2016. In March 2017, Ambré performed at the BUKU Music + Art Project in New Orleans. In August 2017, she released the single, "Must Be The Fall". The following month, she was featured alongside Isaiah Rashad and Joey Purp on the TOKiMONSTA track, "No Way". Also that year, two tracks she co-wrote ("Changes" and "U") appeared on H.E.R.'s self-titled album, which would go on to win the Grammy Award for Best R&amp;B Album in 2019.