Lyric music like "Annie's Wonderland" is the most suitable. You can look for Bandari's album.

I still remember that the most commonly used one was the violin solo in "Spanish Rhapsody".

Give you some:

"Love Letter", "Secret", "Dawn", "Childhood", "The Little Mermaid", "Moonlight", "Dream", "Sunny Day", "Your Smile" "Missing" "Ancient Poetry" "Windmill"