Between 1929 and 1934 Mucha attended Frognall School; a private establishment in North London much favoured by actors and musicians for their daughters‘ education.
Constant Lambert (1905–1951), musical director for the Sadler's Wells Ballet, was impressed when he was shown the score but was apparently sceptical that a woman could have written it.
In the spring of 1941, whilst attending a party in Leamington Spa, Geraldine met the young Czech writer Jiří Mucha.
After Jiří Mucha's release he was gradually able to resume his writing career and Geraldine had occasional work as a music editor for the publishers Melantrich.
Beginning in the early 1960s the Muchas were closely involved in the international resurgence of interest in the Art Nouveau designs of Jiří's father, Alphonse.
Jiří Mucha died in 1991, just after the communist government collapsed, and consequently Geraldine returned to Prague for the remainder of her life; although she continued to spend every summer at her house in Scotland, not far from Aberdeen.
With her son John and the newly created Mucha Foundation, Geraldine continued to act as an enthusiastic ambassador for the artistic legacy of her father-in-law.
But with her deep love of Scottish folk music, which she often quoted in her works, she remained closer to the interests of older composers, such as Ralph Vaughan Williams (1872–1958) or Béla Bartok (1881–1945) who she particularly admired.
Igor Stravinsky was another “modern” whose music held a great fascination for her and she was endlessly interested in how composers constructed and scored their works.
Mucha's first encounter with Czech music had been shortly before the Second World War when she had heard the young prodigy Vitěslava Kapralová (b.
Having arrived in Prague, Mucha hoped to take lessons with Vitězslav Novák (1870–1949), a distinguished composer with a definite late-Romantic approach to music.
This did not happen, but in her own music Mucha continued to seek to blend her personal romantic spirit with a more modern, mid-twentieth century sound.