thumb|Orphica by Joseph Dohnal (Kunsthistorisches Museum)
thumb|Orphica by Joseph Dohnal (Kunsthistorisches Museum)
The orphica is a portable piano invented by Carl Leopold Röllig in the late 18th century. Like a guitar, the orphica could be held on a shoulder strap, thus being an early forerunner of the modern keytar.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).