If you have been studying voice, or spent time around other vocalists, you may have heard them refer to their “book”. This book refers to a singer’s repertoire. What a singer chooses to study and perform is hugely important. It frames your identity as an artist and the way you are presented to your audiences.
I can’t count the number of times a student has told me, “I can’t sing with vibrato, I’m a pop singer;” or “I can’t sing an aria, I’m a musical theatre singer.”
Admittedly, I was once a victim of this kind of thinking. I would say, “I can’t belt, I’m a legit singer.”