Famous German singing teacher; born in Vienna. Studied first with J. Miksch at Berlin, then became an opera singer, having developed a good voice. Later he studied with Giorgio Ronconi. After leaving the stage Sieber settled in Dresden as a teacher of singing in 1848, went to Berlin in 1854 and ten years later received the title of professor from the University. He died in Berlin. Sieber wrote mostly songs and educational works on vocal art and solfeggio, in all about one hundred, all well known and frequently republished.