Aye Dil Laya Hai Bahar from Kya Kehna was inspired/copied from the song Oh! Carol by Neil Sedaka. Rajesh Roshan was the music director for Kya Kehna.
Here is the original song Oh! Carol by Neil Sedaka.
Stereo Nation did a cover version of the song in the 90s. Here is Oh! Carol by Stereo Nation.