Recently, we tapped British trio London Grammar as one of the next foreign acts to break in the United States. And last night’s debut appearance on U.S. television with two stunning, impressive performances of “Strong” and “Wasting My Young Years” on Late Night with Jimmy Fallon seem to indicate our predictions may be true. Following their performance of “Strong,” a delicate song that demonstrates the forceful power in Hannah Reid’s voice, even Fallon himself was taken aback simply saying, “Fantastic, oh my gosh. I love London Grammar right there.” The band stuck around for a web exclusive performance of “Wasting My Young Years,” another gorgeous track off their debut album If You Wait. Beginning in March at SXSW, London Grammar will head out on a string of U.S. dates in support of that album.

Watch London Grammar’s performance of “Strong” above and “Wasting My Young Years” below.