The album consists of all of the B-sides from the singles the band released between 1987 and 1989 (except "Ana Ng"), with the addition of the relatively new songs "The World's Address (Joshua Fried Remix)"—released beforehand only on Don't Let's Start—and "Hello Radio", which was previously released on a promotional sampler.
All of the songs, with the exception of "(She Was A) Hotel Detective (Single Mix)", are included on Then: The Earlier Years, a compilation of the band's early material.
Miscellaneous T is said to be named for the section in record stores where They Might Be Giants' albums were most often shelved in the band's early years.[9]
The 13th track, which has no name listed on the album's track listing, is not actually a song, but a snippet of a recording inadvertently left on the TMBG Dial-A-Song answering machine, in which a confused listener named Gloria talks to an unknown third party about the mystery of "There May Be Giants" and "There Must Be Giants", as she mistakenly refers to the band. It would later be referenced when Bryant Gumbel referred to them as "They Must Be Giants" when they performed "Your Racist Friend" on the Today Show to promote the release of Flood.