Deep house is known for complex melody, use of unrelated chromatic chords underlying most sequences, and a soul, ambient, or lounge vibe to the vocals (if any). It is a style of house music that blends elements of Chicago house, 80s soul, jazz-funk and Detroit techno. Deep house commonly appeared as a genre in the early 90s with more melodic sounds gathering influences from soul, jazz and African beats. In the early compositions (1988–89), influences of jazz music were most frequently brought out by using more complex chords than simple triads (7ths, 9ths, 13ths, suspensions, alterations) which are held for many bars and give compositions a slightly dissonant feel. The use of vocals became more common in deep house than in many other forms of house music. Sonic qualities include soulful vocals (if vocals are included), slow and concentrated dissonant melodies, and a smooth, stylish, and chic demeanor.

Tech house is a subgenre of house music that mixes elements of techno with house music. The term tech house developed as a shorthand record store name for a category of electronic dance music that combined musical aspects of techno, such as "rugged basslines" and "steely beats," with the harmonies and grooves of progressive house.[1][2] The music originally had a clean and minimal production style that was associated with techno from Detroit and the UK.[2] In the mid to late 1990s a scene developed in England around club nights such as The Drop run by Mr.C & Plink Plonk, Heart & Soul, and Wiggle run by Terry Francis and Nathan Coles.[1] Other DJs and artists associated with the sound at that time included Charles Webster, Bushwacka!, Dave Angel, Herbert, Funk D'Void, Ian O'Brien, Derrick Carter, and Stacey Pullen.[1][2] By the late 90's London nightclub The End, owned by the former Shamen rapper Richard West (Mr C) and Layo Paskin, was considered the home of tech house in the UK

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