The term 'To Autumn, For One' is composed of two crossword solutions: ODE (3 letters) and POEM (4 letters). ODE is a type of lyric POEM that is usually written in praise of a person, place, or thing. It is often written in a formal style and is usually addressed to a particular subject. POEM is an acronym for 'Piece of Expressive Meaningful Expression'. This term is used to describe any work of literature that expresses emotion, thought, or ideas. To Autumn, For One is a POEM by the English poet John Keats, written in 1819. It is an ODE to the season of autumn and is considered one of his most famous works.