These indentations are called coffers.
Answer:
Compared to its cousins, the vibraphone is a little bit more complex: not only do you play it with 4 mallets (just like the marimba btw) but it also has pedals, a bit like a piano. Finally, the biggest difference between the vibraphone and other mallet percussion stands in its very name: the vibrato effect.Compared to its cousins, the vibraphone is a little bit more complex: not only do you play it with 4 mallets (just like the marimba btw) but it also has pedals, a bit like a piano. Finally, the biggest difference between the vibraphone and other mallet percussion stands in its very name: the vibrato effect.Compared to its cousins, the vibraphone is a little bit more complex: not only do you play it with 4 mallets (just like the marimba btw) but it also has pedals, a bit like a piano. Finally, the biggest difference between the vibraphone and other mallet percussion stands in its very name: the vibrato effect.
Explanation:
I believe the correct answer is high relief.
When a sculpture is designed to be viewed from one side, and
protrudes dynamically from its background plane (at least half of their natural
circumference of sculpture must protrude from background plane) or is carved with
deeply incised marks is called high relief. For example, high-relief art was
made with marble by Francesco Grassia in Rome.