explain the following line from " to Autumn" " think not of them , thou hast thy music too."

In the third stanza, Keats rhetorically asks, "Where are the songs of Spring?" (23), but tells the reader not to think of these melodies. Autumn itself possesses the beautiful songs of "the soft-dying day" (25), the mourning song of the gnats, the bleating of lambs, the singing of crickets, and the songs of "the redbreast" and swallows.