Ninjam is a way to allow users to perform a "jamm" session over the Internet.According to Wikipedia a jam session is defined as:

''"a musical act where musicians play (i.e.'' '"jam"''') by [http://en.wikipedia.org/wiki/Improvisation improvising] without extensive preparation or predefined arrangements. Jam sessions are often used to develop new material, find suitable arrangements, or simply as a social gathering and communal practice session."''

Therefore, Ninjam is not recommended to playing pre-arranged musical arrangements, but can be used to help improve sections of songs, or help individuals to learn how to improve their live performance skills.