[Verse] C D G D/F# Em Our whole universe was in a hot dense state, C D G D/F# Em Then nearly fourteen billion years ago expansion started. Wait... C D The Earth began to cool, G D/F# Em The autotrophs began to drool, C D Neanderthals developed tools, G D/F# Em We built a wall (we built the pyramids), C D G D/F# Em Math, science, history, unraveling the mysteries, C D G That all started with the big bang! [Verse] C D G D/F# Em "Since the dawn of man" is really not that long, C D G D/F# Em As every galaxy was formed in less time than it takes to sing this song. C D G D/F# Em A fraction of a second and the elements were made. C D The bipeds stood up straight, G D/F# Em The dinosaurs all met their fate, C D They tried to leap but they were late G D/F# Em And they all died (they froze their asses off) C D The oceans and Pangea G D/F# Em See ya, wouldn't wanna be ya C D G Set in motion by the same big bang! C D Am7 It all started with the big BANG! [Bridge] D G Em Am7 It's expanding ever outward but one day D G Em Am7 It will pause and start to go the other way, Am7 D Am7 D Collapsing ever inward, we won't be here, it won't be heard Am7 G/B C D Our best and brightest figure that it'll make an even bigger bang! [Solo] C D G D/F# Em C D G D/F# Em [Verse] C D G D/F# Em Australopithecus would really have been sick of us C D G D/F# Em Debating how we're here, they're catching deer (we're catching viruses) C D G D/F# Em Religion or astronomy, Descartes or Deuteronomy C D G It all started with the big bang! C D G D/F# Em Music and mythology, Einstein and astrology C D G It all started with the big bang! C D G It all started with the big BANG!
Source: https://tabs.ultimate-guitar.com/tab/barenaked_ladies/big_bang_theory_chords_670302