Question: When did the highly experimental musical style on the album Quixotic originate?

Related documents: [0]  [DOC] Quixotic is the debut album by English singer-songwriter Martina Topley-Bird. The album spans several musical styles including trip-hop, electronic and rock. It was co-written and produced by Topley-Bird and received positive reviews from music critics upon its release and was shortlisted for the 2003 Mercury Music Prize. "Quixotic" also includes a collaboration with musician Tricky, with whom Topley-Bird collaborated prior to her solo work. [END] 
[1]  [DOC] Trip hop (sometimes called "downtempo") is a musical genre that originated in the early 1990s in the United Kingdom, especially Bristol. It has been described as "a fusion of hip hop and electronica until neither genre is recognizable," and may incorporate a variety of styles, including funk, dub, soul, psychedelia, R&B, and house, as well as other forms of electronic music. Trip hop can be highly experimental. [END]  
Answer: the early 1990s
the early 1990s