Portal 2 - Halls Of Science 4

1	https://tabs.ultimate-guitar.com/tab/misc-computer-games/portal-2-halls-of-science-4-chords-1129147	Chords
2	https://www.yourchords.com/317991/Misc-Computer-Games/Portal-2---Halls-Of-Science-4-Chords/	Chords
3	https://www.ultimate-tabs.com/misc-computer-games/portal-2-halls-of-science-4-chords	Chords
4	https://www.tabondant.com/eng/tabs/misc-computer-games/portal-2-halls-of-science-4#317050	Chords
5	https://www.guitartabs.cc/tabs/m/misc_computer_games/portal_2_halls_of_science_4_crd.html	Chords
6	https://www.guitaretab.com/m/misc-computer-games/307134.html	Chords

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