Bill Callahan is an American singer-songwriter, who has also recorded and performed under the band name Smog. Callahan began working in the lo-fi genre, with home-made tape-albums recorded on four-track tape recorders. Later he began releasing albums with the label Drag City, to which he remains signed today.

Lo-fi is a music or production quality in which elements usually regarded as imperfections in the context of a recording or performance are present, sometimes as a deliberate choice. The standards of sound quality (fidelity) and music production have evolved over the decades, meaning that some older examples of lo-fi may not have been originally recognized as such. Lo-fi began to be recognized as a style of popular music in the 1990s, when it became alternately referred to as DIY music. Some subsets of lo-fi music have become popular for their perceived nostalgic and/or relaxing qualities, which originate from the imperfections that define the genre.