Take away from me the noise of your songs! I will not listen to the music of your harps.
Their feast days (Amos 5:21), not the great festivals which God Himself instituted, but the idolatry, drunkenness, immorality, etc. which they had added.  Their solemn assemblies; the sweet smell (KJV) induced by the burning of leavened bread (condemned in  Amos 4:5) had rendered even their assemblies unholy.  Their burnt-offerings and meal offerings (Amos 5:22), rendered absolutely unacceptable to God by the drunkenness, immorality, the omission of any sin-offering, and the adoration of the gold image of a calf installed by Jeroboam I.