Contradiction with Ecclesiastes 3:4
Contradicts by emphasizing a time to mourn, whereas Psalms 81:1 emphasizes a time to sing joyfully.
Ecclesiastes 3:4: A time to weep, and a time to laugh; a time to mourn, and a time to dance;
Contradiction with Lamentations 3:26
Suggests it is good to wait quietly for salvation, contradicting the call to make a joyful noise in Psalms 81:1.
Lamentations 3:26: [It is] good that [a man] should both hope and quietly wait for the salvation of the LORD.
Contradiction with James 4:9
Advises to be afflicted and mourn, contradicting the joyful singing in Psalms 81:1.
James 4:9: Be afflicted, and mourn, and weep: let your laughter be turned to mourning, and [your] joy to heaviness.
Contradiction with Amos 8:3
Speaks of songs turning into wailing, contradicting the joyful singing in Psalms 81:1.
Amos 8:3: And the songs of the temple shall be howlings in that day, saith the Lord GOD: [there shall be] many dead bodies in every place; they shall cast [them] forth with silence. [shall be howlings: Heb. shall howl] [with...: Heb. be silent]