Answer to Question 1
agbe = life, kor = clear
agbekor means enjoying life or clear life (after a battle was over)
atamuga = the great oath, and is the name given to agbekor when played during times of war; warriors vow to obey their commanders and fight bravely.
atsia (plural atsiawo) often added as a prefix added to agbekor, i. e., atsiagbekor; atsia refers to
(i). stylish self-display, or
(ii). a preset figure of music and dance, or
(iii) Margin note, WOM, p. 76, Perhaps because the word atsia means stylishness,' many English-speaking Ewe musicians refer to the performed drum and dance compositions as styles.'
Answer to Question 2
War drumming to prepare for a war or to communicate the results of a war.
--The Meaning of the Name Agbekor