Two Things at Once is a compilation album by the American punk rock band the Descendents, released in 1988 through SST Records. It combines the band's 1982 debut album Milo Goes to College with the 1985 release Bonus Fat, itself a compilation of 1981's Fat EP, 1979's "Ride the Wild" / "It's a Hectic World" single, and the track "Global Probing" from a 1981 compilation titled Chunks. Two Things at Once has been described by critics as an essential collection of the band's early years.

From 1981–86 the Descendents' releases had been published by New Alliance Records, an independent record label run by D. Boon and Mike Watt of the San Pedro-based punk band the Minutemen, who were contemporaries of the Descendents. Following Boon's death in 1985, New Alliance was sold to SST Records in 1987. SST released the Descendents' 1987 albums All and Liveage! and also re-released all of their previous albums.Two Things at Once was released in 1988, combining all of the band's recorded output from 1979 to 1982 in a single release: Their debut single "Ride the Wild" / "It's a Hectic World" (1979), the Fat EP (1981), their first full-length album Milo Goes to College (1982), and the song "Global Probing" from the 1981 New Alliance compilation Chunks.

...
Wikipedia