Four short lines, and a lot of play packed into them. The poem pictures a rooster at dawn, but instead of the usual crow, he comes with a harp and a violin. The title, "Classical cockerel," sets up the joke: the farmyard's noisiest alarm clock turns into a refined musician.
The morning is a "din," a jumble of noise, and the music seems to cut through it. The hen-house, described as "inquisitive," becomes a curious audience. The final line, "to go within," is a little ambiguous. It could mean the hens are drawn inside to listen, or that the music invites a quieter, more inward kind of attention. The syntax is slightly bent too, which gives the lines a whimsical, off-kilter feel.
The speaker seems amused and gently charmed rather than anything stronger. The mood is light, playful and a bit surreal, like a small cartoon that also leaves you with a hint of stillness.