Program/playbill for a performance of Macagni's Cavalleria Rusticana and Leoncallo's I Pagliacci (double bill on the same evening) presented by the Metropolitan Opera in an outdoor concert setting in 1966. This item includes both the inscribed signature of both Placido Domingo (who sang the leading tenor roles in both operas) as well as the signature of the famous American baritone Cornell MacNeil. Domingo's signature is on the front cover page with MacNeils signature on the cast page (see scans). 4 pages total, each page is 6.5 x 9.25 inches, in excellent condition.