I want to play Also Sprach Zarathustra (IMSLP PDF), but there is something I don't understand there. In the first few bars there are 4 half notes beamed in pairs as thirty-second notes. Because the time signature is common time I deduce each of those "hybrid" notes is equal to a quarter note. Am I correct? If so does the math add up?
In addition in the 6th bar in the second and third thirty-second notes beams are "broken." Why is that?