I agree with Q's posts on trademark. His information on copyrights as it applies to live music was a bit overly simplified.
As pointed out, the owner of the music copyright needs to provide license to any music. Just about any song published after 1924 is protected. For example, Alfred Brumley's I'll Fly Away (which Johnny Cash used to sing) is still protected. In fact, there was a federal lawsuit between the heirs not long ago on this one.
Now copying is in several forms. It covers not only making copies of existing recordings, but also audio recordings (called phonorecords in the law, whether they be vinyl,CDs, tapes, or digital downloads) of you performing someone else's work, but also all public performances (such as playing in bars and othe concert venues), being played on the radio, or being used behind movies and TV shows.
The copyright owner is usually (for mainstream music) a music publisher which often was aligned with the record company, but things are heading away from that.
All of these have individual license schemes. The right to make audio copies is called a "mechanical license." Once anybody makes a phonorecord, there's a provision in the law called a compulsory license that requires the owner to allow you to make your own "cover" of the song. You have to pay this to the owner. Most of the mainstream industry has authorized a company called "The Harry Fox Agency" (
www.harryfox.com and its related site songfile.com) to collect the mechanical license fees for them.
To do public performances, either live or on the air, the venue (be it the radio station, the bar or concert hall, a background music service, websites, or in some cases a university) contracts with one of the Performance Rights Organizations. For most of these there are blanket licenses that cover all music represented by that organization. The big three PROs in the US are ASCAP (
www.ascap.com), BMI (
www.bmi.com), and SESAC (
www.sescac.com).
Note that your individual performance (you as the JCP) will want to be represented by one of these.
If you want to embed the music into another performance (a theatrical work, a movie, TV show, even a commercial), you will need to obtain synchronization rights. These are usually individually negotiated. They are without compulsory or blanket rights arrangements. There are special organizations (music clearance) that specialize in running down all the rights you'll need for these.