Low fidelity or lo-fi describes a sound recording which contains technical flaws such as distortion, hum, or background noise, or limited frequency response. The term "low-fidelity" is used in contrast to the audiophile term high fidelity or "hi-fi", which refers to stereo equipment that very accurately reproduces music without harmonic distortion or unwanted frequency emphasis or resonance. The ideas of lo-fi are taken to extremes by the genre or "scene" of no fidelity, or no-fi. Some lower-budget recordings from the 1970s and 1980s have a "lo-fi" sound due to the limitations of the analog recording and processing techniques, which introduced unwanted artifacts such as distortion and phase problems. In some recordings, however, high fidelity recording is purposely avoided, or the artifacts such as simulated vinyl record crackles are deliberately retained or added in for aesthetic reasons.

Some unique aural qualities are available only with "low-tech" recording methods, such as recording on tape decks, or using analog sound processors (e.g., analog compressors or reverb units). The lo-fi aesthetic has even contributed to musical subgenres, such as the "lo-fi" subgenre of indie rock and a great deal of punk rock. Lo-fi techniques are espoused by some genres outside the indie rock world, particularly by certain heavy metal bands (especially within the sludge and black metal scenes), where the very low-quality of the recording has become a desirable quality, as it is associated with authenticity, as well as a "darker" sound or a "rebellion" against good production.

Sophie Koh is a singer and songwriter based in Australia. In the Pop category.

Born in New Zealand, Sophie Koh grew up both there and in Singapore. After finishing university in Melbourne, Australia, she headed north to Darwin, where she won Triple J's Unearthed contest in 2003. Returning to Melbourne, she launched her debut album "All The Pretty Boys" in 2005. Sophie is regularly asked to play high profile events in Melbourne and around Australia. She released her follow-up album "All Shook Up" in 2008. Having learnt piano since age 6, Koh later spent two years majoring in classical piano at Melbourne Conservatory of Music. Koh is also a qualified optometrist and an official ambassador for Optometry Giving Sight's World Sight Day. Between 2005 and 2011 Sophie was managed by Tom Collins. She resides in Melbourne but is currently recording her 3rd album in Los Angeles with producer Brad Wood. The new album is due for release in July 2012.

Sophie Koh signed to the In-Fidelity Recordings label after winning Triple J's Unearthed Contest in 2003. In 2005 she appeared on rage on the ABC TV channel. She became a successful breakthrough female artist by reaching as high as #3 on Triple J's Net 50 and remaining in the chart for 8 consecutive weeks. Her single "Anywhere" from her debut album All The Pretty Boys has been played all over Australia on Triple J radio stations and scored a slot on rage playlists in successive weeks during July and August 2005.

Giuseppe Ottaviani (born in 1978) is an Italian trance musician.

Ottaviani began studying piano at the age of 4 in Viterbo, a small Italian town near Rome. After attending music school in his early childhood and studying classical music as a teen, he discovered electronic music. He started to play his first DJ sets at clubs and on local radio stations in 1995, and later began to use his computer to produce his own music. He met DJs Andrea Ribeca and Giacomo Miccichè in 1999, and they decided to start the music project NU NRG; the group began releasing tracks on Vandit Records in 2001.

Giuseppe left NU NRG in 2005 to pursue a solo career. Most of his tracks are released on Vandit, such as Linking People, Through Your Eyes and No More Alone with the vocals of Stephen Pickup. Giuseppe Ottaviani also worked with Paul van Dyk on two tracks of his album In Between, which are Far Away and La Dolce Vita.

For most of the last decade,^[when?] Giuseppe Ottaviani has been playing music at most venues on live MIDI controllers, rather than using CD players.

Sean Tyas is an American DJ and electronic music producer. The genre of his productions and DJ sets can be broadly categorized as trance.

Sean's music receives regular airtime on radio shows such as Armin van Buuren's "A State of Trance," Above & Beyond's "Trance Around the World," and his own show, "Tytanium Sessions."

Originally from Long Island, New York, Sean's interest in electronic music began in 1991 when he heard a tape containing various electronic interpretations of "O'Fortuna." From then on, he began listening to what was then known as "techno." He took his first steps into music production in 2000/2001, using software called "Impulse Tracker"[2] on the Microsoft DOS operating system.

In 2004, Sean moved to Germany to begin work producing for DJ Beam, followed by a move to a more appealing set-up in Switzerland, where he produced several successful singles for Dave202. Sean continues to live in Switzerland, now with his Swiss wife Mirella.

In 2008, Tyas became the quarterly resident DJ for Sheffield (UK) trance night Off The Rails.