Cristina Deutekom - Ich bin verliebt (from Schön ist die Welt - Franz Lehár)

Cristina Deutekom in February 1986, during the first concert after her heart surgery, in the year she said goodbye to her active singing career.
Fun fact: the conductor is Franz Bauer-Theussl, who also conducted the performance of Die Zauberflöte, in which Deutekom made her debut as Queen of the Night in 1963.