effects - altering the original sound by adding delay, reverb, distortion, phase shift, pitch bend, harmonizer, etc.
EQ - short for equalize, refers to the addition or reduction of audio frequency ranges by boosting or pulling back levels. There are three main ranges that can be altered; high, mid and low.
entertainment lawyer - a lawyer specializing in the entertainment or music industry. Publishers and record labels usually do not accept demos from unknown artists unless they receive them from a reliable source such as lawyer.
engineer - a person who runs the recording equipment. A good engineer must have a thorough knowledge of all equipment related to recording including, programs, mixers, microphones, compressors, filters, amplifiers, speakers, monitors, etc.