请列出以下4首歌曲的演唱者：
            1. Yesterday Once More
            2. My Heart Will Go On
            3. A Thousand Miles
            4. I Will Always Love You
1. "Yesterday Once More" - The Carpenters
2. "My Heart Will Go On" - Celine Dion
3. "A Thousand Miles" - Vanessa Carlton
4. "I Will Always Love You" - Whitney Houston