The Verpine species created a type of choral music known as Verpine choral arrangements, which involved the friction of their legs rather than vocalizations. Sabine Wren enjoyed this unique music and documented it in her personal journal.
The initial reference to Verpine choral arrangements appeared in Sabine My Rebel Sketchbook, a young readers canon book from 2015. Daniel Wallace authored it, framing it as Sabine Wren's in-universe journal.
- Sabine My Rebel Sketchbook (Initial mention)
- " Database " — Star Wars - Das offizielle Magazin 90