The poem tells a story about a frog and a nightingale. The frog boasts about his singing abilities and offers to train the nightingale. The nightingale becomes famous through the frog's concerts but he pushes her too hard. The frog earns money but the nightingale loses her beautiful voice. In the end, the overworked nightingale bursts a vein and dies, showing the dangers of being overly influenced by someone. The moral is that artists should stay true to themselves and not let others compromise their talents.