Estelle Liebling
... that soprano Estelle Liebling, the voice teacher of Beverly Sills and Meryl Streep, performed in more than 1600 concerts with John Philip Sousa and his band?
... that soprano <b id="mwB58"><a href="./Estelle_Liebling" id="mwB6A" rel="mw:WikiLink" title="Estelle Liebling">Estelle Liebling</a></b>, the voice teacher of <a href="./Beverly_Sills" id="mwB6E" rel="mw:WikiLink" title="Beverly Sills">Beverly Sills</a> and <a href="./Meryl_Streep" id="mwB6I" rel="mw:WikiLink" title="Meryl Streep">Meryl Streep</a>, performed in more than 1600 concerts with <a href="./John_Philip_Sousa" id="mwB6M" rel="mw:WikiLink" title="John Philip Sousa">John Philip Sousa</a> and his band?