Günther sang as a tenor at the Theater Royal from 1839 to 1856, and established a career with an emphasis on French and Italian repertoire.
In the early 1840s, he often sang with Swedish singer Jenny Lind, and by 1844 they became romantically linked.
[2] Günther studied from 1846 to 1847 with Manuel Garcia in Paris, conducting, during that time, a brief but successful career in that city.
Afterward, he returned to a position at the Royal Swedish Opera, where he sang for a further decade, though also making international appearances.
He served as conductor of the New Harmonic Society from 1860 to 1878, and was elected as a member of the Royal Academy of Music in 1841.