The Plain White T's are an American rock band from Lombard, Illinois, formed in 1997 by high school friends Tom Higgenson, Dave Tirio, and Ken Fletcher, and joined a short time later by Steve Mast. The group had a mostly underground following in Chicago basements, clubs, and bars in its early years.The band is best known for their number-one hit song "Hey There Delilah", which achieved platinum status in 2007 and earned two Grammy nominations. The songs "1, 2, 3, 4" and "Rhythm of Love" were also certified platinum in 2009 and 2011 respectively.