How do I get my music solicited to producers or publishers?

to be solicited it has to be send via a credible agent, music attorney, etc. Try sending your material to some smaller indie publishers.. often they sign you then later sell your contract to the bigger ones( IF your good)... go to amazon and find a book called "The songwriters Market".. it has Addy's and info on thousands of publishers, labels, etc.... tell you which ones accept unsolicited material, etc... good luck.