Bigroom House is a subgenre of house music, which takes the melodic and progressive nature of progressive house and combines it with the energy of Electro House. It is often characterized by minimal sounding synths and plenty of reverb and piano synths. The term "big room" is referring to the reverb with which the music creates in a big room, a feature of the genre's sound. Since 2013, the term has been used to describe house songs that contain a "hardstyle-like" bass kick.
The structure contains an initial filling phase characterized by percussions (1–2 minutes) with a following melody, sometimes (not always) with the presence of a vocal part, a drop phase closed by a percussive outro, similar to the intro. Usually there are two melody-drop sequences (rarely one or three). In radio versions of a big room house song, the initial filling phase and the outro are absent (they are useful for the transition from one track to another in DJ sets).
The tempo is 4/4, from 126 to 132 BPM. Usually club versions last for 5–8 minutes, while radio versions last for 3–5 minutes.
The widespread use of the terms "progressive house", for big room tracks with a melodic construction, and "electro house", to refer to "energetic" big room tracks, might create confusion about the nomenclature of the genre.