Final answer:
The tone of 'Ode to a Nightingale' by John Keats is melancholic. The speaker expresses a sense of heartache and longing to escape from the weariness and sorrow of the world.
Step-by-step explanation:
The tone of 'Ode to a Nightingale' by John Keats is melancholic. This is evident in the speaker's description of their heartache and the drowsy numbness they feel. The speaker longs for an escape from the weariness and sorrow of the world, expressing a desire to drink from a beaker full of the warm South. The melancholic tone of the poem is further supported by the speaker's acknowledgement of the speaker's longing to fade away into the dim forest.