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| www.christianhassenstein.com | Jazz guitarist, founder of DJAMtones |
| www.facebook.com/christianhassenstein | Photos, current events |
| www.janverwey.com | Dutch chromatic harmonica player |
| www.djam.nl | Christian's Jazz school in Amsterdam/NL |
| www.sannavanvliet.nl | Dutch vocalist and pianist |
| www.facebook.com/DJAM.Amsterdam | Photos, current events |