A movement in this musical form titled “Quaerendo invenietis” ("kway-REN-doh in-veh-nee-AY-tiss”) instructs a performer to turn their music upside down as if using a mirror. In a piece in this form, the violins play dux ("DOOKS”) and comes ("COH-mez”) parts over an ostinato beginning (read slowly) “D, down to A, up to B, down to F-sharp.” Every (10[1])third movement except the last of J. S. Bach’s (10[1])Goldberg Variations is in this form, (-5[1])whose “crab” type uses a retrograde voice. (10[1])A gigue ("ZHEEG”) is paired with a piece in this form that features a bassline that is repeated 28 times. A round is a type of this form in which the same melody is sung at different times. For 10 points, name this musical form of a widely performed Johannes Pachelbel piece “in (10[2])D.” ■END■