The concept of "no EP" refers to albums with few songs, and EP generally refers to extended play. Extendedplay (EP), commonly known as CD, is a music distribution form between single and album. Generally speaking, a single usually contains 1 to 3 tracks, while extended play usually contains 4 to 8 tracks.

Albums include thesis albums, music albums and so on. Thesis album refers to a periodical that focuses on a certain field, a certain problem, and an event that everyone is concerned about. The album focuses on the current research hotspots and will have great repercussions. MusicAlbum, also known as "Album", refers to a kind of media that gathers more than a certain number of songs or music and releases them to the outside world. It refers to a single item of several sound recordings released by CD, record, tape and other media, and generally refers to a record music recording album with at least 10 tracks.

In fact, the songs contained in EP (extended play) are often about 10~28 minutes longer than the single, but half shorter than the album.