<https://forums.soompi.com/topic/412060-2017-mama-announces-special-stages-by-red-velvet-nct-127-wanna-one-and-fromis_9/>
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"2017 MAMA Announces Special Stages By Red Velvet + NCT 127, Wanna One, And fromis_9"
<https://forums.soompi.com/topic/412060-2017-mama-announces-special-stages-by-red-velvet-nct-127-wanna-one-and-fromis_9/>