Arrange silly ditty, sacrificing a tango (4)
I believe the answer is:
tidy
'arrange' is the definition.
(I know that tidy is a more specific form of the action order)
'silly ditty sacrificing a tango' is the wordplay.
'silly' indicates an anagram.
'sacrificing' suggests deleting specific letters.
'a tango' becomes 'T' (phonetic alphabet: alpha, bravo, charlie etc.).
'ditty' with 't' taken out is 'dity'.
'dity' anagrammed gives 'TIDY'.
(Other definitions for tidy that I've seen before include "Neat and orderly" , "Neaten" , "so substantial a sum" , "Arranged neatly" , "Spruce up" .)