Petri, who began playing the recorder at the age of three, is noted for her virtuosity and versatility across a wide range of styles, from the baroque repertoire of the height of the instrument's popularity to contemporary works written particularly for her.

She has performed premiers of dozens of works, by Malcolm Arnold, Gordon Jacob and Richard Harvey, as well as Daniel Börtz, Erik Haumann, Hans Kunstovny, Erling Bjerno, Thomas Koppel, Ove Benzen, Vagn Holmboe, Piers Hellawell, Gary Kulesha, Asger Lund Christiansen, Egil Harder, Michael Berkeley, Butch Lacy, Miklos Maros, Ezra Laderman, Jens Bjerre, Henning Christiansen, Niels Viggo Bentzon, Axel Borup Jørgensen, and Gunnar Berg.

Petri has taken a particular interest in the combination of recorder and guitar, collaborating with guitarists including Göran Söllscher, Kazuhito Yamashita and Manuel Barrueco.

Petri studied with Prof. Ferdinand Conrad at the Staatliche Hochschule für Musik und Theater in Hannover, partly because she was still too young to become a full-time student in Denmark.

Leo Black's sleeve note for this recording remarks, "one realises what can happen when a mighty talent starts young enough."