Italian composer and librettist (1842–1918) best known for the opera Mefistofele. AMQS on an off-white 6.75 x 5 sheet. Boito pens two very intricate bars of music, signed underneath, 'Arrigo Boito.' In very good condition, with light brushing to first name of signature, two horizontal folds, and one central vertical fold, passing through first letter of signature, and overall light toning. Accompanied by an unsigned 5 x 7 portrait. RRAuction COA.