jamming away with music

[learning101]

Hi,
Is the phrase "jamming away with music" correct? I saw it from an essay book. The extract is as follow:
"The seat was not fully vacant, she had no choice but to sandwich herself between two lads. One of which was a young boy with an earphone on, jamming away with the music. While another one was an older teen browsing through a newspaper." I googled it but none came out with the exact phrase as used in the book.

 

[emsr2d2]

I wouldn't say it's the standard use of the word "jam" (in a musical context). Normally, it means a group of musicians coming together and playing together unrehearsed. It's usually called a "jam session".
In the context of that sentence, though, it's understandable. It means that the boy is probably tapping his feet, or humming along (or even air-drumming/air-guitaring) with the music.

 

[teechar]

I saw it [STRIKE]from[/STRIKE] in an essay book.

Please cite properly the source of the text you quoted. Provide the author/editor, title, publisher, and year of publication.