[All] I thought Taeyang was the main vocalist just by watching Big Bang's debut stage.

Sometimes I search for Taeyang on YouTube and watch his videos.

Taeyang appeared on an idol girl group survival program called Island 2.
There is a scene where he gives advice to a trainee named Yoon Ji-yoon who is participating in the program.

The video where Taeyang himself advised that although he was neither the main vocalist nor the leader, he simply did his best in the role given to him on stage was impressive.