Studio tapes and some 8 track cartridges. The tape configuration. Standard cassettes, unless otherwise noted. Most commercial tape cartridges, unless otherwise noted. Not a disc, cylinder, or tape.
Most instantaneous discs are acetate, wax, or aluminum.
Most commercial or mass-produced cylinders are plastic. Most instantaneous cylinders are wax. Compact digital discs are made of a thin layer of aluminum coated with plastic. Use also for acetate. Use also for aluminum.