The McQuail Uses and Gratifications Theory:

In 1983, McQuail classified 4 categories for common reasons for media uses. The ones that are relevant to music magazine are highlighted in red below:

Information
- finding out about relevant events and conditions in immediate surroundings
  society and the world
- seeking advice on practical matter or opinion and decision choices
- satisfying curiosity and general interest
- learning; self education
- gaining a sense of security though knowledge

Personal Identity
- finding reinforcement for personal values
- finding models of behaviour (to some extent)
- identifying with valued others in the media (in this case a music artist)
- gaining insight into oneself

Integration and Social 
- gaining insight into the circumstances of others; social empathy
- identifying with others and gaining a sense of belonging
- finding a basis for conversation and social interaction
- having a substitute for real-life companionship
- helping to carry out social roles
- enabling one to connect with family, friends and society (mainly friends)

Entertainment
- escaping, or being diverted, from problems
- relaxing
- getting intrinsic cultural are aesthetic enjoyment
- filling time
- emotional release
- erotic/sexual arousal