"Want to Be Free", a collaboration between Wang Sulong and Yan Yalun, is a soulful song. Their voices are considered very listenable, with slow speed, long tones, low notes, and changes in pitch, like gurgling water. Singing softly and quietly, it has a unique charm. In "The Sound of God", the two of them performed this song with four hands. The melodious piano and the two's affectionate voices were praised by the audience as the sound of nature.

From a musical perspective, their collaboration is undoubtedly a success. Their voices complement each other, retaining their individual characteristics while forming a harmonious whole. Their singing skills and emotional expression were recognized by the audience.

Judging from the song itself, "Want to Be Free" is a soulful song. The lyrics express the yearning and pursuit of freedom, which is also very consistent with the images of Wang Sulong and Yan Yalun. Their singing made the song more emotional and made the audience more relatable.

In general, "Want to Be Free" collaborated by Wang Sulong and Yan Yalun is a successful collaboration. Their voices and singing skills have been recognized by the audience. This song is also because of their The singing is even more moving.