The Invisible Line is the debut album by UK band, Temposhark.

Allan Arthur Guy Sigsworth is an English record producer and songwriter. During his career, he has worked with many artists, including Seal, Björk, Goldie, Madonna, Britney Spears, Kate Havnevik, Imogen Heap, Bebel Gilberto, Mozez, David Sylvian, Alanis Morissette, Eric Whitacre, Alison Moyet, and AURORA. He has also collaborated with many celebrated instrumental musicians, including Talvin Singh, Jon Hassell, and Lester Bowie. He is a member of the duo Frou Frou, with Imogen Heap.