Yes you got 762. It was a bit easier.
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This German Composer was know for his amazing productivity. He produced over 600 "Lieder" in his short life (31 years). He was also very famous/notorious for moving a lot as he never seemed to be able to pay rent. Due to this fact, it is often joked by visitors to Vienna that just about every place has a "*blank* slept here" sign.
Who was this composer?