Is Happy Birthday the most sung song?

Related questions

1. What is Abcdef?
2. What is the tune for Twinkle Twinkle Little Star?
3. How does delirium cause death?
4. How long does it take to recover from ICU delirium?
5. What IQ is gifted?
6. When should a child recognize letters?
7. What was Mozart's first song?
8. Who invented ABCD alphabets?
9. What is Type E personality?
10. When should a child be able to count to 10?

Tags

1. #songs
2. #guinness
3. #fellow
4. #world
5. #found
6. #other
7. #jolly
8. #birthday
9. #continues
10. #enduring
11. #records
12. #include
13. #tunes
14. #simplest
15. #happy
16. #listed
17. #commonly