The Prusaspirā Society has published their translation of Antoine de Saint-Exupéry's "The Little Prince". The book was translated by Piotr Szatkowski (Pīteris Šātkis) and released in 2015. The other efforts of Baltic Prussian societies include the development of online dictionaries, learning apps and games. There also have been several attempts to produce music with lyrics written in the revived Baltic Prussian language, most notably in the Kaliningrad Oblast by Romowe Rikoito, Kellan and Āustras Laīwan, but also in Lithuania by Kūlgrinda in their 2005 album "Prūsų Giesmės" (Prussian Hymns), and in Latvia by Rasa Ensemble in 1988 and Valdis Muktupāvels in his 2005 oratorio "Pārcēlātājs Pontifex" featuring several parts sung in Prussian.