[3] Several of Rehnqvist's works were composed for the voices and interpretation of Lena Willemark and Susanne Rosenberg, both having a past as folk singers, such as Davids nimm and Puksånger-lockrop (1989).

Puksånger & lockrop (Timpanum Songs – Herding Calls) was her second major vocal composition, set for two singers and percussion, in which kulning "begins the piece and sets the atmosphere for the entire work", followed by a section based on "condescending traditional Finnish proverbs" about women, described as "highly effective satiric attacks on misogyny.

[4] Rehnqvist composed Solsången (Sun Song) in 1994, scored for chamber orchestra with one female solo singer and two narrators.

In March 2006 Rehnqvist was awarded the honour of a major retrospective by the Royal Stockholm Philharmonic Orchestra.

[6] In 2022 the Nordic Council Music Prize was awarded to Rehnqvist for the ecological crisis oratorio Silent Earth, (libretto by Kerstin Perski) which received its premiere on January 29, 2022 after postponements in the two previous years.