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 third movement except the last of J. S. (-5[2])Bach’s Goldberg Variations is in (10[1])this form, whose “crab” type uses a (10[1])retrograde voice. A gigue ("ZHEEG”) is paired with a piece in this form that features a bassline that is repeated (10[1]-5[1])28 (10[1])times. A round is (10[1]-5[1])a type of (-5[2])this form in which the same melody is sung at (10[1])different times. For 10 points, name this musical form of a widely performed Johannes Pachelbel piece (10[1])“in (10[6])D.” ■END■