Answer:
To A Skylark is Shelley's romantic ode to a small songbird he believed embodied joy and happiness.
Explanation:
The skylark's song surpasses all music; it is a divine expression, an ideal beyond the reach of humans, who know happiness only through sadness.
If only the lark could teach the poet and reveal 'half the gladness/That thy brain must know, - then people might listen to the poet and be transformed. But can this ever be achieved?
The poem is sparked by inspiration, fueled by aspiration and carries a philosophical insight.
The poet's approach to this singing bird is fervently romantic, that is, Shelley took inspiration from the natural world, believing it to be an expression of the divine.