Who is Cassandra Spittmann, German singer mentioned by PM Modi in 'Mann Ki Baat'?

During the 105th episode 'Mann Ki Baat', Prime Minister Narendra Modi talked about a 21-year-old blind singer from Germany. PM Modi shared Cassandra Mae Spittmann's two songs 'Jagat Jaana Palam', a Sanskrit shloka dedicated to Lord Vishnu, and a Kannada song. Spittmann has mastered music in several Indian languages, including Hindi, Malayalam, Tamil, Urdu, Assamese, and Bengali, PM Modi said.