what later became trip hop. In 1993, Kirsty MacColl released "Angel", one of the first examples of the genre crossing over to pop, a hybrid that dominated the charts toward the end of the 1990s. Mainstream breakthrough Massive Attack's first album Blue Lines was released in 1991 to huge success in the United Kingdom. Blue Lines was seen widely as the first major manifestation of a uniquely British hip hop movement, but the album's hit single "Unfinished Sympathy" and several other tracks, while their rhythms were largely sample-based, were not seen as hip hop songs in any conventional sense. Produced by Dollar, Shara Nelson (an R&B singer) featured on the orchestral "Unfinished", and Jamaican dance hall star Horace Andy provided vocals on several other tracks, as he would throughout Massive Attack's career. Massive Attack released their second album entitled Protection in 1994. Although Tricky stayed on in a lesser role and Hooper again produced, the fertile dance music scene of the early 1990s had informed the record and it was seen as an even more significant shift away from the Wild Bunch era. In the June 1994 issue of UK magazine Mixmag, music journalist Andy Pemberton used the term trip hop to describe the hip hop instrumental "In/Flux", a 1993 single by San Francisco's DJ Shadow, and other similar tracks released on the Mo' Wax label and being played in London clubs at the time. "In/Flux", with its mixed up bpms, spoken word samples, strings, melodies, bizarre noises, prominent bass, and slow beats, gave the listener the impression they were on a musical trip, according to Pemberton. Soon, however, Massive Attack's dubby, jazzy, psychedelic, electronic textures, rooted in hip hop sampling technique but taking flight into many styles, were described by journalists as the template of the eponymous genre. In 1993, Icelandic musician Björk released Debut, produced by Wild Bunch member Nellee Hooper. The album, although rooted in four-on-the-floor house music, contained elements of trip hop and is credited as one of the first albums to introduce electronic dance music into mainstream pop. She had been in contact with London's underground electronic music scene and was romantically involved with trip hop musician Tricky. Björk embraced trip hop even more with her 1995 album Post by collaborating with Tricky and Howie B. Homogenic, her 1997 album, has been described as a pinnacle of trip hop music. 1994 and 1995 saw trip