Performers are people who make a living by showcasing their artistic talents. In music they are the musicians, singers and dancers who perform on stage or onscreen. Also see the Global Alliance of Performers web site.
Producers are the people who guides artists and musicians whether independent or signed under a label. They make sure the project is done on time, within the alloted budget and to the highest quality possible. They are very involved in every phase of the project, from the recording session to the release of the album. Also see The Music Producers Guild in the UK.
The music promoter may work directly with artists, musicians and bands or work with owners and operators of performance venues. When working for an artist or band, the promoter sees to it that his talents get the necessary exposure and attention through press releases, radio interviews, tv appearances, etc. When working as a promotions manager of a venue, their role is to book performers, conceptualize shows and do press releases among others. Also see:
A&R Coordinator or Administrator Booking Agent Music Publishing
To transcribe means to notate recorded music into sheet music, also to adapt a written music piece for a specific instrument into another instrument. To become a transcriber you need to have a good ear, have a solid background in music theory and well versed in various music styles. Nowadays there are softwares that may be used to transcribe music. Also see Introduction to Transcribing Music.