Duets seem to be everywhere these days, folks. Partly because ABC recently debuted its reality singing competition, Duets, but mostly because we can’t walk ten feet without hearing Gotye’s and Kimbra’s “Somebody That I Used to Know.” After learning that the hit has already sold upwards of seven million copies worldwide and is pegged to be the best-selling single of the year, we decided to take a trip through time to check out other record-breaking singles featuring two vocalists. To our surprise, every song on our newly compiled top 10 list is from the past decade, except for the number one best-selling duet. (We’ll give you a hint: “Catalina Wine Mixer.”) After the jump, check out our illustrated infographic chronicling the top-selling duets of all time, and take note — since “Somebody That I Used to Know” doesn’t lend Kimbra equal billing, we also included songs that feature guest artists. Which means, unfortunately, that the songs on this awesome list of top duets were displaced. But, that doesn’t mean we won’t still send you here and make your day a little weirder. Enjoy!