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"Therefore I Am" - Billie Eilish Xbox cover art
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"Therefore I Am" - Billie Eilish

Add "Therefore I Am" by Billie Eilish to your Rock Band™ 4 song library. Compatible with Rock Band™ 4 only. For music credits, visit www.rockband.com.

Developer
Harmonix
Publisher
Harmonix
Genre
Music
Release date
April 22, 2021
Age rating
ESRB: TEEN
Official Microsoft Store

Where to buy "Therefore I Am" - Billie Eilish

Prices are shown for the region and currency returned by the XboxDB price crawler. Last checked March 7, 2026.

Historical snapshot
Store Price Region Link
Gamivo 25.70 USD Historical US View offer
Kinguin 27.80 USD Historical US View offer
Instant Gaming 28.06 USD Historical US View offer
G2A 29.34 USD Historical US View offer
CDKeys 30.51 USD Historical US View offer
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