Who were the leading figures in the free jazz movement?

Atype of construction where tha main load bearing element are hung for suspension cables that are then suspended from vertical supports anchored into the ground or a riverbed

The caves at lascaux were closed in 1963 because a. vandals were destroying the paintings b. the collective breath of the many visitors caused the paintings to corrode c. the weather was destroying the paintings d. the government of france wanted scholars to be able to study the work without distraction

The first c.d. was released after the phonograph. 75 years 200 years 100 years 50 years