[2] Hindmarsh gained her teaching diploma (ARMCM) from the Royal College of Music in Manchester and then continued to study opera for an additional 18 months.
[6] In reviewing Princess Ida in 1961, The Times wrote that, in the title role, "Hindmarsh charms, amuses and... moves the audience".
[7] That paper commented on a 1962 performance of The Gondoliers: "Outstanding among last night's cast was Miss Jean Hindmarsh, a winning Giannetta both in appearance and voice.
[9][10] At the Festival, in 1999, Hindmarsh and baritone Michael Rayner gave the world premiere performance of "Reflect, my child", a song cut from H.M.S.
[5] Of the 1957 Pirates, reviewer Mel Moratti wrote, "The highlights must be the pairing of Thomas Round and Jean Hindmarsh as Frederic and Mabel.