Angama shares its mainland Japanese origin with Okinawa's Eisā. The songs to which people dance are called nenbutsu songs. According to the genealogy of the San'yō lineage, nenbutsu practice was brought from Ryūkyū in 1657 when Yaeyama's samurai leader Miyara Chōjū traveled to Okinawa to pay tribute. It is known from other sources that by that time nenbutsu practice had spread to the capital Shuri–Naha region of Okinawa Island. There were at least two traditions of nenbutsu practice. One was started in the 1600s by Taichū (1552–1639), a Jōdo sect monk from Mutsu Province, and was carried on by his followers in Kakinohana, Naha. The other was performed by the Chondarā, a Shuri-based group of puppeteers, who also had mainland Japanese roots. Folklorist Shinjō Toshio argued that what Miyara Chōjū learned must have been Taichū's one.[4] Sakai Masako, a researcher on folk music, questioned Shinjō's theory. Pointing out that Yaeyama has a larger repository of nenbutsu songs than Okinawa, she presumed multiple origins of nenbutsu songs.[5] It was considered taboo to sing nenbutsu songs out of season.