Simplify the following text for a Grade 10 native English-speaking person.
Original: Walter led the first performance of Das Lied in 1911 in Munich and of the Ninth in 1912 in Vienna with the Vienna Philharmonic . Decades later , Walter and the Vienna Philharmonic ( with Mahler 's brother-in-law Arnold Rose still the concertmaster ) made the first recordings of Das Lied von der Erde in 1936 and of the Ninth Symphony in 1938 .
Simplified: He conducted the first performance of Das Lied von der Erde with the Vienna Philharmonic .