Raisa mentioned the song "Terserah" as the most difficult song she has ever sung in terms of vocal technique. She revealed this at a press conference for the release of the ambiVert album in the Blok M area, South Jakarta, on Wednesday (25/6/2025). "Definitely (the song) 'Terserah'," said Raisa.

Due to its difficulty, Raisa admitted that she hasn't performed this song much on stage. She mentioned that the vocal challenges presented by this song make her quite selective when she wants to perform it live.

"I have sung that song less than 10 times live. The vocals are very challenging," said Raisa.

The album ambiVert itself represents Raisa's maturation as a musician as well as an expression of honesty in her work. She admitted to rediscovering her identity after taking on the roles of a mother and wife.

"I have rediscovered who I am as a mother, as a wife. So what kind of woman am I now, after I have taken on these two roles?" Raisa said.

The album ambiVert contains 11 songs and is produced by Lafa Pratomo and Rendy Pandugo. Two songs in it, "Ternyata Tanpamu (Cantik)" and "It’s Okay To Not Be Okay", also involved the late Gustiwiw in the writing and music production.