"Part of Your World (Reprise)" is a song sung by Ariel in the Disney animated movie "The Little Mermaid". In this song, Ariel expresses her desire to be part of the human world and to be with Prince Eric. She longs to leave her underwater world and to experience the land and all its wonders. She asks a series of rhetorical questions, expressing her desire to stay close to Prince Eric and to see him smiling at her.

Ariel also imagines a life where the two of them could walk and run together in the sun, enjoying each other's company. The lyrics suggest that Ariel is willing to give up everything to be with Prince Eric, even if it means leaving her family and her home behind.

The line "I don't know when, I don't know how, but I know something's starting right now" suggests that Ariel is willing to take a leap of faith and follow her heart, even if she doesn't know where it will lead her. She is determined to become part of Prince Eric's world and to make her dreams come true.

Overall, "Part of Your world (Reprise)" is a heartfelt expression of Ariel's desire to be with Prince Eric and to experience the human world. It is a song about the power of love and the willingness to take risks to pursue one's dreams.