Regarding,
"Die ganze Welt ist ein Orchester,"
or
"The whole world is an orchestra" :

many of the words in this poem have musical usage.
The words borrowed from Italian are easily recognized:
Andante, Allegro, Maestoso, Tempo.

Some of the German words are less familiar.
"Balgentreter" means somebody blowing the bellows (Balg).
"Fistuliren" may mean singing falsetto, although it relates to pipe organs sounding harmonics when they overblow the fundamental tone.

"Takt" of course is the beat, the measure.