I will not remember what you wore on your gig. I won’t remember how your makeup looked, or if you had any on at all. I won’t remember if you had on high heeled shoes and took them off during your show. I won’t remember how your hair (or wig/weave, as it were) was styled. I won’t remember how big your earrings were. I won’t remember any of those things unless they in some way seemed to prohibit your ability to sing well.
I won’t remember if there was a light show. I won’t remember if there was video displayed behind you. I won’t remember the set design of the stage. I won’t remember if you had dancers. I won’t remember if you danced unless you are the song-and-dance act à la Sammy Davis, Jr. I won’t remember what swung in the air or blew up during your show, unless you know… something really does blow up, or shots are fired in the venue because that is, unfortunately, the world we currently live in.
What I will remember is how well you sang. I will remember if you were in good voice. I will remember if you sounded comfortable; unhindered by wardrobe/accessories/staging from breathing well and singing well. I will remember if you sang a piece tonight as well, or better than, the last time I heard you sing live. I will remember how tight your band was. I will remember how well you and the band (or your accompanist) interacted or if you interacted at all. I will remember if the band/accompanist (also sound engineer) was supportive of, or in competition with, your vocal levels, colors and nuances. In short, I will remember the songs, and how well they were performed.