When choosing a soundtrack to match Ai Qing’s selected poems, you can refer to the following suggestions:

1. **Understand the style of Ai Qing’s works**: When choosing a soundtrack, you must first fully understand the style of Ai Qing’s works. Art style and theme ideas. His poetry is known for being deep, passionate, and infectious, so when choosing a soundtrack, you should also look for music with corresponding emotional expressiveness.

2. **Looking for music with similar emotional expressions**: Ai Qing’s poems often express his deep love for the motherland, people and life, as well as his brave struggle in the face of difficulties and oppression. Therefore, you can choose some music with similar emotional expressions, such as "Yellow River Cantata", etc., to highlight this emotion.

3. **Focus on folk music**: Ai Qing’s poems have deep national emotions and patriotism, so it is very appropriate to choose Chinese folk music as the soundtrack. For example, the performance of erhu, flute, guzheng and other musical instruments can well reflect the connotation and spirit of Chinese culture.

4. **Consider the coordination of poetry and music**: When choosing a soundtrack, you should pay attention to the coordination of poetry and music. Generally speaking, the rhythm and rhyme of poetry should match the beat and melody of music to enhance the complementarity and foil of poetry and music.

5. **Personalization**: If you have special needs or scenarios, such as a specific event or occasion, you can try to customize the soundtrack according to these needs and scenarios. For example, when reciting Ai Qing's poems, you can create or choose corresponding music specifically for these poems.

In summary, choosing the soundtrack for Ai Qing’s selected poems requires full consideration of factors such as the style of the work, emotional expression, music type, and the coordination between poetry and music. Hope these suggestions are helpful to you.