Corrrect questions?

Please help me with these. Let us pretend someone is trying to ask some questions to two of his cousins about the lyrics of the song "You Raise Me Up" by Westlife. The song contains lines like "You raise me up, so I can stand on mountain" and "You raise me up, to walk on stormy seas."

Could these be correct questions?

1. According to lyrics, which of the following is not the reason for his being raised up? -- I feel this question is incorrect since the lines (which some lines were given previously) are in present tense. Then how should they be written?

2. In the song, when is he strong?

General questions (not on the song lyrics):

3. Do you think it takes special training to be a good singer nowadays?

If yes, where do you think a person who is aspiring to become a singer can/could go to get the training necessary?

4. Do you know of anyone who has succeeded as a singer?

5. If you were driving to a place to meet your girlfriend at a certain time on a rush hour and on the way there you see a famous singer, would you move your car to the right to see him in person?

6. If you happened to see a waiter who looked like a famous singer you had been wanting to get an autograph from, would you ask him whether he was the famous singer you were thinking of? Would you also leave a bigger tip than usual, even though he ended up not being the famous singer, because he looked like the person you thought he was? -- Is this correct as a second conditional with an ellipted (?) if-clause?