Career
She became a Young Artist with the Palm Beach Opera when she was 14 and made her operatic debut there two years later as the Sandman in Engelbert Humperdinck"s Hansel and Gretel. She also appeared on the National Public Radio program From the Top when she was 15 performing "O mio babbino caro" from Gianni Schicchi. She was invited back to From the Top in 2010, a show taped in Burlington, Vermont, with commentary by Marilyn Horne.
She appeared at the United States Supreme Court Building in May 2009 where she sang solo and with Thomas Hampson in the Justices Chambers.
In 2009 she competed in Helsinki, Finland, in the Mirjam Helin International Competition where she was awarded second place. She had her debut concert in Helsinki, Finland in 2009.
In October 2009 she performed in the Marilyn Horne Mediterranean Cruise to Italy, Croatia, Turkey and Greece. In March 2010 she performed at the Musashino Hall, Tokyo, Japan.
She appeared as the Princess with Gotham Chamber Opera"s production of Xavier Montsalvatge"s opera El gato con botas at the New Victory Theater.
In January 2011 she returned to Palm Beach Opera"s Orfeo ed Euridice in the title role. In May 2011 she appeared as Tytania in Boston Lyric Opera"s A Midsummer Night"s Dream. In January 2011 she became a San Francisco Opera Adler Fellow and the following May appeared in the company"s premiere of Christopher Theofanidis" opera Heart of a Soldier with Thomas Hampson in the main role.
In January 2012 she appeared as Gilda in Florida Grand Opera"s Rigoletto.
Sierra is featured in the book Driven: Six Incredible Musical Journeys where author Nick Romeo dedicated one of the chapters ("Journeys") to her. In January 2016 she performed at Venice New Year"s Concert with Stefano Secco and at Louisiana Scala of Milan as Gilda in Rigoletto with Leo Nucci.
