Hardcore is a genre of electronic music that incorporates strong synths, percussion and echo effects from Eurodance, and generally uses more euphoric melodies, as well as less harsh-sounding kick drums and sometimes, like in UK Hardcore, syncopated basses.
It is one of two genres placed under Monstercat's blanket term, Hard Dance, alongside Hardstyle.
Carnival: Usually has a fast hat pattern, and is combined with heavy Dubstep growls, screeches, and synths as well. It is typically accompanied by Hybrid Trap or Brostep.
Eurodance: Often carries a positive, upbeat attitude; the lyrics usually involve issues of love and peace, dancing and partying, or expressing and overcoming difficult emotions. The early to mid-1990s Eurodance vocals were frequently done by a solo vocalist or a mixed rapper-vocalist duet. Sometimes non-rap vocals are used. Almost all Eurodance emphasizes percussion and rhythm. The tempo is typically around 140 beats per minute but may vary from 110 to 150.
Freeform: A subgenre of Hardcore which used to be known as Trancecore. It sits within a BPM range of 140-160, and can be boiled down to a hybrid between Trance & Hardcore.
Frenchcore: A subgenre of Hardcore that employs offbeat basslines, heavy kicks and massive melodies at fast tempos of 190-230 BPM. The genre can be rather light or very heavy and abrasive, making it one of the more diverse genres of Hardcore.
Gabber: Characterized by its bass drum sound. Essentially, it comes from taking a normal synthesized bass drum and over-driving it heavily.
Happy Hardcore: Typified by a very fast tempo (usually around 160–190 BPM) and punchy kicks, often coupled with solo vocals or sentimental lyrics. Its characteristically 4/4 beat happy sound distinguishes it from most other forms of hardcore, which tend to be darker. Happy Hardcore is often written in Major keys.
Hardcore: Typically faster than Hardstyle, ranging from 160 - 190+ BPM. Hardcore songs usually have less distorted and more compressed kicks than Hardstyle.
Powerstomp: A Hybrid genre between Melbourne Bounce and UK Hardcore, generally known for the typical Reverse Bass Hardstyle kick and swing in the bassline, however without distortion and usually at a BPM between 140-170. It is also characterized by a screechy UK Hardcore lead, or a nasal Big Room lead, percussion is distinctly more clear in the mixes due to the syncopation needed to create the groove in the track.
Psycore: Not to be confused with the Psytrance subgenre of the same name, Psycore (the Hardcore variant) is comprised of UK Hardcore structures & tempos sitting around 160-190 BPM with Psytrance tritonals and beat patterns within the drops.
UK Hardcore: A characteristically harder style by its "thicker, harsher bassline, as well as less of the breakbeat associated with the happy hardcore music of the 1990s.