Billie Eilish uses her entire body to express her music. Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

Billie Eilish fans reach out towards the up and coming artist. Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

Electropop singer-songwriter Billie Eilish dances erratically across the stage. Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

Electropop singer-songwriter Billie Eilish motions towards the crowd. Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

Billie Eilish jumps up and down while singing “you should see me in a crown.” Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

A neon spider takes up most of the stage, tying into her personal motif of spiders on her body. Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

Singer Billie Eilish passionately vocalizes to the crowd. Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

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Neon light beams shine out towards the crowd behind singer Billie Eilish. Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

Billie Eilish stands on an amp to engage her fans. Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

Singer Billie Eilish passionately vocalizes to the crowd. Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

A neon spider takes up most of the stage, tying into her personal motif of spiders on her body. Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

Billie Eilish leans over an amp to engage her fans. Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

Crowd members form hearts with their hands at the end of the concert. Billie Eilish performs at the Roseland Theater in Portland on Oct. 23, 2018. (Maddie Knight/Emerald)

Follow Maddie Knight on Instagram: @maddieknightphotography