Organ
Bosworth & Toller Anglo-Saxon Old English Dictionary - organ
According to the Old English Dictionary:
es;
- organ
- m. A song :-- Se organ the Pater Noster (cf. cantic), Salm. Kmbl. 107 ; Sal. 53. Gif hé ðæs organes ówiht cúðe, 65 ; Sal. 33. Organa swég ðe from englum biþ sungen, L. E. I. pref. ; Th. ii. 400, II. v. organian. organ