singsong

a regular and monotonous rising and falling intonation

informal group singing of popular songs

speak, chant, or declaim in a singsong

move as if accompanied by a singsong; "The porters singsonged the travellers' luggage up the mountain"

uttered in a monotonous cadence or rhythm as in chanting; "their chantlike intoned prayers"; "a singsong manner of speaking"