Here's why:
* Lyrical Focus: Lyric poetry primarily focuses on expressing personal emotions, feelings, and thoughts. "The Solitary Reaper" is a beautiful depiction of the speaker's emotional response to the sight and sound of the lone woman reaping.
* Musicality: Lyric poetry often employs musical devices like rhythm and rhyme to enhance the emotional impact. "The Solitary Reaper" uses a regular ABAB rhyme scheme and a flowing, melodic rhythm.
* Subjectivity: While the poem describes a scene, the focus is on the speaker's internal response and interpretation of that scene. The reaper's song evokes a sense of mystery and deep feeling within the speaker.
Therefore, based on these key characteristics, "The Solitary Reaper" can be classified as a lyric poem.