Designation used in piano music indicating that a specific passage is to be played by the right hand. C.d. are the initials for the Italian words colla destra ( colla means with and destra means right implying the right hand). Colla can also be shortened to col, so col destra would mean the same as colla destra.See also [Eng.] R.H. ; [Eng.] right hand; [Fr.] M.d. ; [Fr.] main droite; [It.] M.d. ; [It.] mano destra; [It.] colla destra; [It.] col destra.Also[Eng.] L.H. ; [Eng.] left hand; [Fr.] M.g. ; [Fr.] main gauche; [It.] M.s. ; [It.] mano sinistra; [It.] C.s. ; [It.] colla sinistra; [It.] col sinistra.