He-man ordered to keep time in country song (6)
I believe the answer is:
anthem
'country song' is the definition.
(I've seen this in another clue)
'he-man ordered to keep time' is the wordplay.
'ordered' is an anagram indicator.
'to keep' means one lot of letters goes inside another.
'time' becomes 't' (abbreviation).
'he'+'man'='heman'
'heman' is an anagram of 'anhem'.
'anhem' going around 't' is 'ANTHEM'.
'in' acts as a link.
(Other definitions for anthem that I've seen before include "National melody" , "National hymn" , "Religious chant" , "The man for a popular song" , "National or religious song" .)