This is an RNAV SID but you can do it using any RNAV 1 equipment, which doesn't necessarily mean GPS. If you have DME/DME/IRU RNAV then you will be picking up IAH and DAS vortacs to identify MUSIQ, and IAH (at DME 88) and LFK to get VELCO.
The MEA of 12000, I'm thinking, is to give you enough...