Lay (7)
(Other definitions for secular that I've seen before include "Not involving religion,worldly" , "Not concerned with religion" , "Worldly" , "Layman's" , "Concerning the laity" .)
'lay' is the definition.
(reposing is a kind of lying)
This is the entire clue.
(Other definitions for reposed that I've seen before include "Rested" , "Relaxed" , "modelled afresh" , "What's settled" .)
'lay' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for song that I've seen before include "Ditty" , "Lied" , "Vocal composition" , "Unnecessary fuss" , "Musical rendition" .)