Later he began releasing albums with the label Drag City , to which he remains signed today .
Callahan began working in the lo - fi genre of underground rock , with home - made tape - albums recorded on four track tape recorders .
Later Callahan began releasing albums with the label Drag City , to which Callahan remains signed today .
Callahan began working in the lo - fi genre of underground rock , with home - made tape - albums recorded on four track tape recorders .