very close Mike, very close....actually your answer to part 2 would be also an extension of part 3... I actually missed "Rainbow".... good find. However, like I said "Rainbow " would be a compliment to part 3. Part 2 requires the song have the same main melody, three covers written by 3 different artists however. "Rainbow" has three different melodies, and are therefore not covers, hence an extension of part 3 that I happen to miss
Dont forget, you have to list all three versions of "For You" and the CD's they are found on.