Question: A Song in My Heart was by the singer who took what role in The Phantom of the Opera at the Royal Albert Hall?
Context: The Royal Choral Society is an amateur choir, based in London.  Formed soon after the opening of the Royal Albert Hall in 1871, the choir gave its first performance as the Royal Albert Hall Choral Society on 8 May 1872 – the choir's first conductor Charles Gounod included the "Hallelujah Chorus" from "Messiah" in the inaugural concert.  On 9 July 1891, the Royal Choral Society performed in a 'Grand Concert for the Visit of Their Imperial Majesties, The German Emperor and Empress', also attended by the Prince of Wales and the Duke and Duchess of Edinburgh. Liz Robertson (born 4 May 1954) is an English actress and singer and the widow of playwright and lyricist Alan Jay Lerner.  She is especially well known for her performances as Madame Giry, having played the role in the original cast of "Love Never Dies" at the Adelphi Theatre, in "The Phantom of the Opera" at Her Majesty's Theatre and in "The Phantom of the Opera at the Royal Albert Hall". Live at Royal Albert Hall is a live album by the American rock band The Byrds, released in 2008 on Sundazed Records.  The album consists of recordings from the band's appearance at the Royal Albert Hall in London, England on May 13, 1971.  Although the tapes had been in lead guitarist Roger McGuinn's possession since the concert took place, the album represents the first official release of all tracks.  In addition to the regular CD release, "Live at Royal Albert Hall 1971" was also released as a double album vinyl LP. Live at Royal Albert Hall is the second live album by Yanni, recorded live at the Royal Albert Hall and featuring the Royal Albert Hall Organ in performance with Yanni's own symphony orchestra.  The corresponding concert tour for 1995 was "Yanni Live, The Symphony Concerts 1995". Live at the Royal Albert Hall is a live album and video album by British singer Adele, which became available on 29 November 2011 in Australia, 27 November 2011 in the United Kingdom and 29 November 2011 in the United States.  The concert was recorded as part of Adele's Adele Live tour at the Royal Albert Hall in London, including songs from her multi-platinum albums "19" and "21". A Song in My Heart is the first studio album from Welsh tenor, Wynne Evans and was released on 21 March 2011.  Evans has signed a six-album deal with Warner Music.  The album went to number one in the classical albums chart in Wales in its first week of release. Slowhand at 70 – Live at the Royal Albert Hall is a November 2015 album by Eric Clapton recorded live at the Royal Albert Hall on 21 May 2015 during his "70th Birthday Celebration" tour.  A film of the concert was released on 14 September 2015 via cinema broadcasting in various territories.  The cinema release included a report on Clapton's history at the Royal Albert Hall.  A DVD, Blu-ray, compact disc and gramophone record release of the performance was released on 13 November 2015. Live from the Royal Albert Hall is a live album and DVD by American rock band The Killers.  It was released on November 10, 2009 in the UK, Canada and the US.  The album is pulled from two nights the band performed at the Royal Albert Hall in July 2009, and also includes footage from festival dates the band headlined during the middle months of 2009.  A CD of live material accompanies the DVD as part of the package. The Reptile World Tour ( ), or sometimes just The Reptile Tour was a global concert tour held by the British Rock musician Eric Clapton in support of his fifteenth studio album "Reptile".  The tour started on February 3, 2001 at London's Royal Albert Hall and ended on December 15, 2001 at the Yokohama Arena in Yokohama.  The tour included notable nights like Clapton's first long concert stint at the Royal Albert Hall for the first time since 1996, rare appearances in South America, as well as first-ever performances in Moscow and St Petersburg, Russia, Mexico and Venezuela. Wynne Evans (born 27 January 1972) is a Welsh tenor.  Known for his role as the tenor Gio Compario in the Gocompare.com insurance adverts on television in the United Kingdom, he sang the role of Ubaldo Piangi in the 25th anniversary production of Andrew Lloyd Webber's "The Phantom of the Opera at the Royal Albert Hall".  He also responded to the New Zealand All Blacks' Haka in 2004, singing 'Cwm Rhondda'.  He went on to sing at over 30 Welsh International rugby matches.
Answer: Ubaldo Piangi