This might have been a time when Hildegard learned how to play the ten-stringed psaltery. A psaltery () (or sawtry [archaic]) is a stringed instrument of the zither family. The psaltery variant is related to the zither. Martha and Mary, the funerary chapel, and the psaltery. The ukelin is a bowed psaltery with zither strings made popular in the 1920s. She probably also taught Hildegard to play the zither-like string instrument called the psaltery. In the 20th century, the bowed psaltery came into wide use. Medieval music used many plucked string instruments like the lute, mandore, gittern and psaltery. The harp and the psaltery were two of the musical instruments of the day. Mexican psaltery has a trapezoidal form and is double and triple stringed. The psaltery of Ancient Greece ("epigonion") was a harp-like stringed instrument. The psalter or psaltery was one of the instruments which accompanied the Psalm. Moreover, the psaltery was a widely used instrument of the Middle Ages. While the harp had single strips, a psaltery could have multiple strings for one tone. The psaltery was a hand-held instrument, far smaller than the fully evolved harpsichord.