A drop or beat drop in music, made popular by electronic dance music (EDM) styles, is a point in a music track where a sudden change of rhythm or bass line occurs, which is preceded by a build-up section and break. Originating from disco and 1970s rock, drops are found in genres such as EDM, trap, hip-hop, K-pop and country. With the aid of music production applications, drops can vary in instrumentation and sound. Electronic instruments and tools for making drops include oscillating synthesizers, vocal samples, a drum beat, and basslines. Certain drops can include a "beat-up" (so-named because it is a point where the volume of the foundational kick drum beat is increased, after it has been faded down during a break or buildup) and "climax" (a single, striking drop done late in the track). There are also types of drops which deviate from the standard, such as "anti-drops" (songs in which the chorus is more minimal than the build-up) and consecutive "superseding-drops". History The drop "...grew out of '70s rock". A subtype of the drop, the bass drop, was used in the Miami bass subgenre of hip hop music in the 1980s. The bass drop was produced using the Roland TR-808's deep drum machine kick drum sound. Since then, the TR-808 bass drop has been incorporated into a number electronic dance music genres, either produced by a TR-808 or using a sample of a TR-808 bass drop. The EDM drop has continued to evolve over time, circulating through different sub-genres. Genres Electronic dance music Many genres of EDM have more than one drop during a track, especially if the song is built on a "dance-pop" verse/chorus with vocals; a drop may be heard somewhere during each chorus as the high point of that verse/chorus cycle. Some songs tend to emphasize a single drop as the beginning of the high point, or climax, of the track; in vocal sub-genres this occurs most in the last repetition of the chorus, while in nonvocal genres it occurs in the last quarter of the track. In trap, the drop incorporates a dense vibration accompanied by a hard bass style. In pop electronic music, the drop initiates a heavy bounce effect to be used for large audiences. Billboard magazine states that in 2016, the "pop-drop" is the "...post-chorus musical interlude that blends techniques from electronic dance music to hip-hop, and it's taken the