Muriel Foster performed in Edward Elgar's The Dream of Gerontius under Julius Buths in Düsseldorf in May 1902, of which the Manchester Guardian wrote: "The part of the Angel was given by Miss Muriel Foster with the wonderfully beautiful and genuine voice ..." She had previously sung in Elgar's Sea Pictures.
She was a personal friend of Elgar and sang in the first performance of his Coronation Ode of 1902; The Apostles (1903); The Kingdom (1906); "The River" (1910) and The Music Makers (1912).
Elgar dedicated his song "A Child Asleep" to Muriel Foster's son Anthony Goetz 'for his mother's singing'.
Muriel Foster performed regularly in London and the provinces, as well as in Germany, the Netherlands, Russia and the USA.
[1] Charles Villiers Stanford wrote about her Miss Muriel Foster [1] The Musical Times, Vol.