Music Genre
A music genre is a category of music pieces that share a certain basic musical language and style. Categorizing music, especially into finer genres or subgenres, can be difficult as music pieces are not totally distinct. They tend to overlap and fall into multiple categories which are especially so for newly emerging styles of music. For example, techno music can fall under electronic and dance genres. Lounge music can fall under easy listening and instrumental genres. Genres are tool used to commodify and commercialise an artist's complex personal vision.

Here are just some recommendations for the type of hifi equipment to use on the different genres of music. Some genres like rock music require the punch and dynamics transistor amplifiers have. Some genres like Jazz sound better on tube amplifiers which have relaxing layback sound characteristics. Floorstanding speakers generally are better producing low frequency bass where music instruments like drums, double bass, etc are used.

Genres ------------ Amplifiers --------------- Speakers 
Alternative -------- Transistor amplifiers --- Floorstanding speakers
Blues --------------- Tube amplifiers ---------- Either
Classical ---------- Transistor amplifiers --- Floorstanding speakers
Country ------------ Tube amplifiers -----------Either
Dance -------------- Transistor amplifiers --- Floorstanding speakers
Easy listening --- Tube amplifiers ---------- Either
Electronic --------- Transistor amplifiers --- Floorstanding speakers
Hip Hop/Rap ----- Transistor amplifiers --- Either
Instrumental ------ Either ----------------------- Either
Jazz ----------------- Tube amplifiers ---------- Either
New Age ----------- Tube amplifiers ---------- Either
Pop -------------------Transistor amplfiers ---- Floorstanding speakers
R&B ----------------- Transistor amplifiers --- Floorstanding speakers
Rock ---------------- Transistor amplifiers --- Floorstanding speakers
Vocals -------------- Tube amplifiers ---------- Either
World --------------- Either ------------------------ Either

Alternative - Alternative Music is music that doesn't fit in to the mainstream genre. Presently, alternative music generally defines rock music that is an offshoot of the several spinoffs of rock music during the 80s like punk-rock, college rock, indie rock and etc. Like rock, alternative music uses guitars, bass and drums. The major difference is the sound of the instruments.

Blues - Blues is a style of music and how it is played. Classic blues instruments included the guitar and harmonica. Other instruments included in blues are, drums, bass guitar, piano, trombone, trumpet and saxophone. The most important instrument used in blues music is the human voice. For a lot of people, vocals are what make music so great to listen to. Everything else is accompaniment.

Classical - Classical music were written when forms such as the symphony, concerto, and sonata were standardized. The instruments used in most classical music were largely found in an orchestra like stringed bows(Violins/Cellos/Double Bass), woodwinds(flute, clarinet, oboe and bassoon), brass(trumpet, French horn, trombone and tuba), percussion(cymbals, triangle), keyboard, guitar, together with a few other solo instruments (such as the piano, harpsichord, and organ).

Country – Country music  is an American style of popular music, developed from the folk music of the rural southern USA and first known as Hillbilly music. Until the 1920s it was performed largely at home, in church or at local functions, on fiddles, banjos and guitars.

Dance - Dance music is music composed specifically to facilitate or accompany dancing. It can be either a whole musical piece or part of a larger musical arrangement. In terms of performance, the major categories are live dance music and recorded dance music. By 1981, a new form of electronic dance music was developing. This music, made using electronics, is a style of popular music commonly played in dance music nightclubs, radio stations, shows and raves. Disco became influenced by computerization. Looping, sampling and seguing as found in disco continued to be used as creative techniques within Trance music, Techno music, and especially House music.

Easy listening - Easy listening is a broad style of popular music and radio format, evolving out of big band music, and related to MOR (middle-of-the-road) music as played on many AM radio stations. It encompasses the exotica, beautiful music, light music, lounge music, ambient music, and space age pop genres. The range of lounge music encompasses soft rock music-influenced instrumentals, modern electronica (with chillout, nu-jazz and downtempo influences), while remaining thematically focused on its retro-space-age cultural elements. Easy listening is broad and may include instrumental arrangements of popular music designed for playing in shopping malls. A good deal of easy listening music was pure instrumental with no vocal parts, which was called lounge music.

Electronic - Electronic music is any music produced or performed primarily using electronic instruments in a unique, non-generic fashion, such that the focus of the music is on the electronic aspects. Electronic instruments include are not limited to the use of synthesizers, samplers, drums machines, and filtering techniques.

Hip Hop/Rap - Hip hop music is an American musical genre that developed as part of hip hop culture, and is defined by four key stylistic elements: rapping, DJing/scratching, sampling (or synthesis), and beat-boxing. Rapping is a vocal style in which the artist speaks lyrically, in rhyme and verse, generally to an instrumental or synthesized beat. Beats, almost always in 4/4 time signature, can be created by sampling and/or sequencing portions of other songs by a producer. They also incorporate synthesizers, drum machines, and live bands. Rappers may write, memorize, or improvise their lyrics and perform their works a cappella or to a beat.

Instrumental - Instrumental music intended to be performed by a musical instrument or group of instruments. Usually no vocals and singing are involved.

Jazz - While jazz music may be difficult to define, improvisation is clearly one of its key elements. In jazz, the skilled performer will interpret a tune in very individual ways, never playing the same composition exactly the same way twice. Depending upon the performer's mood and personal experience, interactions with fellow musicians, or even members of the audience, a jazz musician/performer may alter melodies, harmonies or time signature at will. The instruments used in marching bands and dance bands became the basic instruments of jazz. Music instruments including woodwinds, saxophones, guitars, brass instruments, drums, keyboards, and band instruments types.

New Age - New Age music is music of various styles intended to create artistic inspiration, relaxation, and optimism. It is used by listeners for yoga, massage, meditation, and reading as a method of stress management or to create a peaceful atmosphere in their home or other environments, and is often associated with environmentalism and New Age spirituality. New Age music is defined more by the effect or feeling it produces rather than the instruments used in its creation; it may be electronic, acoustic, or a mixture of both. New Age artists range from solo or ensemble performances using classical music instruments ranging from the piano, acoustic guitar, flute or harp to electronic musical instruments, or from Eastern instruments such as the sitar, tabla, and tamboura.

Pop - Pop is a term that originally derives from an abbreviation of "popular". Pop music is usually understood to be commercially recorded music, often oriented towards a youth market, usually consisting of relatively short, simple songs utilizing technological innovations to produce new variations on existing themes. Although pop music is often seen as oriented towards the singles charts, it is not the sum of all chart music which has always contained songs from a variety of sources, including classical, jazz, rock, and novelty songs. Pop music as a genre is usually seen as existing and developing separately. Thus "pop music" may be used to describe a distinct genre, aimed at a youth market, often characterized as a softer alternative to rock and roll.

R&B - Rhythm and Blues music, or R&B music, was originally termed "race music". Today’s contemporary R&B music has a distinctly different sound than its forebears, focusing on pop beats and culture rather than the blues, gospel and jazz sounds of previous generations. R&B groups consisted of brass instruments and woodwinds, as well as drums, piano and vocals. These elements were common in jazz bands, but R&B musicians produced a heavier sound with a steady beat.

Rock - Generally rock is a modern music with a simple tune and a strong backbeat is played and sung loudly with the help of electric guitar, electric organ, electric bass or electric piano and drum.

Vocals - Vocal music is a genre of music performed by one or more singers, with or without instrumental accompaniment, in which singing (i.e. vocal performance) provides the main focus of the piece.

World - World music is a general categorical term for global music, such as the traditional music or folk music of a culture that is created and played by indigenous musicians and is closely related to the music of the regions of their origin.