"So when I'm playing, I'm sort of painting a feeling in the air"

Pharrell Williams is describing how he feels when he is performing music. He compares his efficiency to painting a sensation in the air, which indicates that he is able to communicate emotions and environment through his music. When he plays music, he isn't simply producing tunes and rhythms, however he is likewise producing a state of mind and atmosphere that can be felt by his audience. The use of the word painting suggests that his music is like an artwork that he is creating in real-time, and each performance is a special expression of his creativity. Overall, this quote highlights the psychological depth and intricacy of music as an art type.