Miriam Zadik Gold has been exploring this question since she sat down to knit her daughter a pair of 'Mary Jane's'. Who is Mary Jane and why does she appear in so many songs? 
Miriam has made six scenes where you can meet Mary Jane, complete with MP3 players for you to listen to the appropriate  song.
Our friend Polly describes the show very well on Amelia's Magazine site.
Please come for a Mary Jane drink between 6.30-9pm tonight where you can groove to the play list atatched below.

The Monkees – Mary Mary  ***   Run DMC – Mary Mary ***  Mary Jane Girls – In My House ***  Mary Jane Girls – All Night Long *** Mary Jane (All Night Long) – Mary J. Blige ***  Mary Jane – Rick James ***  The White Stripes – Now Mary ***  The Beatles – What’s The New Mary Jane ***  Creedence Clearwater Revival – Proud Mary ***  The Faces – Sweet Lady Mary *** Janis Joplin – Mary Jane ***  Ike and Tina Turner – Proud Mary ***  Everly Brothers – Take a Message to Mary *** Nick Drake – The Thoughts of Mary Jane ***  Del Shannon – Mary Jane ***  Kasentetz-Katz Singing Orchestral Circus – Quick Joey Small *** Jimi Hendrix – The Wind Cries Mary *** Supergrass – Mary