Born in Australia's bush country, Janet Seidel emerged as one of that country's leading cabaret and jazz vocalists. She appeared frequently at Australia's top jazz and hotel venues beginning in the early '80s, often working with bassist brother David Seidel. Janet Seidel also performed at jazz festivals in the U.S., working with such jazz notables as Harry Allen, Dan Barrett, Dave McKenna, and Michael Moore. Her first venture into cabaret came in 2000 when she put together and starred in Doris and Me, a tribute to Doris Day's singing career. Often working with saxophone player Tom Baker and with her brother, she has made numerous albums for the LaBrava label. Her double album The Way You Wear Your Hat was named vocal album of the year by Australia's national newspaper and was a finalist for the prestigious ARIA award. Her The Art of Lounge, Vol. 2 was similarly a finalist for that award for the AIRA Jazz Album of the Year.

Seidel did not have great range, but she used the tools she possessed with great skill and effectiveness. With her intimate style, great feel for the lyrics of songs she sings, Seidel was one of those vocalists who was as much a story teller as a singer. The way she handled the music came off as a fortuitous blend of Blossom Dearie and Doris Day with an occasional nod to Julie London, although she was somewhat jazzier than the latter two. Like Jeri Southern, Shirley Horn, and Diana Krall, she often doubled at the piano.

From the turn of the millennium through the decade of the 2000s, Seidel recorded prolifically, releasing such albums as Love Letters (2000), Doris Me (2001), Don't Smoke in Bed (2002), Comme Çi, Comme Ça and The Art of Lounge, Vol. 3 (both 2003), Dear Blossom and Hooray for Christmas (both 2004), Moon of Manakoora and Delovely (both 2005), and We Get Requests and Charade: Henry Mancini Songbook (both 2007). In addition, her Live in Taipei DVD was released in 2011. Janet Seidel died from ovarian cancer in Sydney in August 2017; she was 62 years old. The numerous recordings she made evince an exquisite, gentle, and agile voice that honored each tune she sang, from classic standards to pop songs and novelties. ~ Dave Nathan, Rovi