I found this article in Forbes.com about how much musicians can make with music. Some of these careers I have never heard of, and I found the Music_Salary_Guide extremely interesting.
Video Game Audio
Salary range: $18,000 – $150,000
Careers in video game audio are among the fastest growing in the music business. Though salaries start low—$18,000 for an assistant engineer who creates rough mixes in the studio—they can rise quickly. Audio directors often earn up to $140,000 per year for overseeing video game projects, while audio tool developers can pull in as much as $150,000 for writing code.
Salary range: $28,000 – $143,000
It’s possible to live comfortably as an orchestral musician, though positions are often hard to come by as budgets shrink. Salary figures above are for full-time jobs with 40-week performance seasons, and they depend largely on location (the starting salary for the Alabama Symphony is $36,594; for the Boston Symphony Orchestra, it’s $132,028).
Salary range: $20,000 – $135,000
This growing field offers a staggering array of different jobs, at locations from nursing homes to prisons, and requires successful completion of an academic and clinical training program approved by the American Music Therapy Association. Salaries start at $20,000 for therapists at inpatient psychiatric units and top out at around $135,000 for private practitioners.
Film/TV Music Supervisor:
Salary range: $2,000 – $500,000 (per project)
Music supervisors select tunes to be used in motion picture projects. Salaries start low in this field—$2,000 – $5,000 for a TV project—but can increase quickly. Low budget feature films yield $10,000 – $45,000, and Hollywood blockbusters can draw $150,000 – $500,000.
Salary range: $70,000 – $150,000+
Any successful musician needs a lawyer, and demand translates to high salaries in many cases. By covering all legal issues, often relating to copyrights, trademarks and contract negotiations for a major artist, a music attorney can easily pull in six figures—and in some cases, seven.