Jessye Norman asserts The Star Spangled Banner is unsingable. Marian Anderson sings it.

Opera singer Jessye Norman says https://youtube.com/shorts/rzgees_8oII?si=7Aahdum4rPW92GZ7 it has "too much territory". (Its tessatura = an octave, Do to Do, 12 notes from Ab to Ab, PLUS an additional "fifth", 7 notes from Ab to Eb). Marian Anderson effortlessly sang https://youtu.be/_iYcheeUS5A?si=t2zq5uuyr-DPnQ-v?t=29s The Star Spangle Banner with her 3 octave vocal range. "Registers" is a confusing term. It usually means, one's personal range. But I was taught that a register is a narrow range in which you sing with the same tone; then you have to switch to different positioning of the vocal "mechanism" to go to "another register". You can hear...