Gregorian chant – the central plainsong used by the Roman Catholic Church that is said to have been developed by Pope Gregory I; sung in monophonic voices.
Hardstyle – intense, heavy style of EDM known for its heavy kick-drums and reversed basslines.
Hardvapour - an Internet-based microgenre of music that emerged in late 2015 as a tongue-in-cheek response to vaporwave, departing from the calm, muzak-sampling capitalist utopia concept of the latter in favor of a gabber- and punk-influenced sound.
Heavy hardcore – a mix of Hardcore punk and Heavy metal.
Heavy metal music – a technically proficient, aggressive style of music similar to metal except not very smooth, heavy metal music usually abandons the bluesy elements of rock music.
Hi-NRG – an electronic, uptempo style of disco known for a reverberating, four-on-the-floor rhythm.
Hill country blues – a style of country blues developed in Northern Mississippi which puts strong emphasis on rhythm and percussion, steady guitar riffs, few chord changes, unconventional song structures, and heavy emphasis on the "groove".
Highlife – Ghanaian style that married traditional African forms with Western pop.
Hiplife – a style of music influenced by Highlife and other Ghanaian musical traditions.
Hornpipe – music played to accompany the British naval dance of the same name.
Horrorcore – hip hop known for dark, horror-inspired lyrics.
Horror punk – punk that is lyrically inspired by 1950s horror B-movies, often in an ironic way.
House music – a relaxed, electronic dance music offshoot of disco characterized by repetitive 4/4 beats, rhythms provided by drum machines, off-beat hi-hat cymbals, and synthesized basslines.
Incidental music – music played in the background of a film or play.
Indian rock – rock music performed by Indians that usually incorporates elements of Indian music into it; related to raga rock, the term Indian rock is usually only applied to Indian rock musicians currently living in India.
Independent music – any music made outside of major record labels. Independent music that is specifically formed around an idea of remaining on the underground and a DIY ethic is referred to as indie music.
Jangle – a sound characterized by undistorted, treble-heavy electric guitars (particularly 12-strings) played in a droning chordal style (by strumming or arpeggiating), giving it an uplifting, 'jangly' sound. This sound is the main focus of an indie/pop rock music style known as jangle pop.
Japanese rock – rock music made by Japanese performers.
Jarocho – Mexican dance and song style from Veracruz.
Jawaiian – fusion of Hawaiian traditional music and reggae.
Jazz – a form of music (usually considered a type of popular music, although some forms can be considered art music) that originated in the late 19th and early 20th century in the Southern United States and is known for its heavy use of musical improvisation and brass instruments (especially the saxophone and trumpet).
Jazz fusion – a style that incorporates rock elements (particularly its backbeat and usage of the electric guitar) into its music.
Jazz rap – a fusion of jazz and hip hop music; usually contains jazz instrumentation (either played live or sampled from older jazz recordings) and hip hop rhythms.
Jazz rock – a fusion of jazz and rock music. Sometimes used interchangeably with jazz fusion, jazz rock is usually seen as being a rock style that incorporates jazz elements (particularly its usage of improvisation and brass instruments) into its music.
Jegog – gamelan played with bamboo-based instruments.
Jesus music – style of CCM developed by the American hippie-based Jesus Movement.
Jewish – music made and performed by Jews talking about subjects like Jewish teachings, life, love and many other things. Usually they are in Hebrew or English.
Juke – faster than Ghetto House, playing at 160bpm, and makes striking use of unconventional drum patterns which differ wildly from other house styles.
Kawaii future bass (also known simply as kawaii bass) — subgenre of future bass, known for its happy and cute timbre and strong Japanese pop culture influences.
Latin metal – a genre of heavy metal with Latin origins, influences, and instrumentation, such as Spanish vocals, Latin percussion, and rhythm such as Salsa rhythm.
Latin pop – used either as a catch-all term for any pop music from the Spanish-speaking world, or as a specific term for a fusion of pop music and Latin music.
Latin rock – used either as a term for Spanish- and Portuguese-language rock music, or as a specific term for a style of rock music that incorporates elements found in Latin music.
Latin soul – very soulful music with Latin elements.
Meditation music – any music created to aid meditation procedures.
Medieval folk rock – style of folk rock that incorporated elements of earlier folk traditions, such as Medieval, Renaissance, and Baroque music, despite what the name may suggest.
Medieval metal – fusion of folk metal and Medieval folk rock.
Minimal music – a heavily experimental form of music known for its simplicity and repetitiveness. Usually refers to a style of postmodernclassical music, although the term has been applied to some genres of popular music (particularly electronica).
Mor lam sing – fast-paced, sexual, and modernized style of mor lam.
Moombahton – fusion of electro house and reggaeton.
Moombahcore – moombahton incorporating dubstep influences and elements of Dutch house.
Motown – a style of music produced by and named after the famous record label that took elements of pop music (particularly its clean production and usage of catchy hooks) in order to gain mass crossover appeal.
Montuno – loose term for Cuban music and its derivatives.