Carlos Feller
... that bass singer Carlos Feller made his debut at the Teatro Colón in 1946, and at the Metropolitan Opera in 1988 in his signature role of Don Alfonso in Mozart's Così fan tutte?
... that bass singer <b id="mwBq8"><a href="./Carlos_Feller" id="mwBrA" rel="mw:WikiLink" title="Carlos Feller">Carlos Feller</a></b> made his debut at the <a href="./Teatro_Colón" id="mwBrE" rel="mw:WikiLink" title="Teatro Colón">Teatro Colón</a> in 1946, and at the <a href="./Metropolitan_Opera" id="mwBrI" rel="mw:WikiLink" title="Metropolitan Opera">Metropolitan Opera</a> in 1988 in his signature role of Don Alfonso in Mozart's <i id="mwBrM"><a href="./Così_fan_tutte" id="mwBrQ" rel="mw:WikiLink" title="Così fan tutte">Così fan tutte</a></i>?