Musical television is becoming increasingly more common, building on the popularity of programmes like Glee with the emergence of hit shows such as Smash and Nashville but let's take a little time to remember that musical moments have never really been restricted to shows about music. For decades, non-musical shows have been experimenting and diversifying narrative techniques by including songs within the diegesis of the episodes themselves. This has been predominantly used in the comedy genre and is usually for comic effect but there have been a few other shows that have delved into the world of the musical. It is relatively rare, however, to find shows that have composed specific songs, pieces and in some cases entire musicals for the purpose of producing a musical episode. More often, the cast will perform covers, as in the Grey's Anatomy episode "Song Beneath The Song" or 30 Rock's rendition of "Midnight Train To Georgia." This list, then, serves to honour those writers and performers who went to all that effort to produce original musical moments that have made for some classic viewing. Whilst it would be impossible to recognise every noteworthy candidate, it aims to be as inclusive as possible and recognise those moments that perhaps might be overlooked for more obvious nominees in most other lists.