Trapezoid is an American folk musical ensemble led by Paul Reiser. It formed in 1975. The name of the group reflects the shape of a hammer dulcimer. The membership of the group other than Reiser has fluctuated over the years. It originally consisted of four hammer dulcimers played together.
Songs recorded or performed
| The Bramble and the Rose | RUS: Love | p. 121 |
| Do You Love an Apple | RUS: Love | p. 122 |
| West Virginia my home | RA: Home | p. 131 |





