The aulos (Greek αυλός, plural αυλόι, auloi) or tibia (Latin) was an ancient Greek musical instrument. Different kinds of instruments bore the name, including a single pipe without a reed called the monaulos (μόναυλος, from μόνος "single"), and a single pipe held horizontally, as the modern flute, called the plagiaulos (πλ… (More on Aulos)