More facts are needed. You should consult with an entetainment attorney who can review the contract and give you a legal opinion. Don't necessarily count on anyone accepting this type of case on contingency. There is a distinction between contingency and pro-bono.
You might be able to find a lawyer to work on contingency if you can demonstrate:
1. you are due the royalties
2. the amount of royalties due
3. that the record company is selling the song
4. and that the record company actually has assets to attach.
If the path is not clear cut because the record company transferred ownership of the songs to a different company then it is unlikely you will get someone to work on contingency.
Discuss this all with an attorney in your area.
You need to have an entertainment attorney research this issue and determine whether there are significant royalties available to collect. Otherwise, it is doubtful that an attorney would take this matter on a contingency.
I agree with my colleagues. You need to consult with an attorney with more details of the project.
This is not a legal advice or solicitation, and does not create an attorney-client relationship. Consult with an attorney. I work for Cardinal Risk Mangement and Cardinal Intellectual Property, IP service companies, but not law firms. I also am the president of Vepachedu Educational Foundation Inc., which is a non profit educational foundation. I also write cultural and scientific compliations for the foundation. I also teach at Northwestern university as a guest lecturer. I also provide some pro-bono guidance on immigration and other issues through Indian American Bar Association. I also have a contract with Cardinal Law Group, a law firm, for IP projects. All this information is on my profile at Avvo and also at Linkedin. Any views/opinions expressed in any context are my personal views in individual capacity only, and do not represent the views and opinions of any firm, client, or anyone else, and is not sponsored or endorsed by them in any way.
You will probably want an entertainment attorney in Florida to handle the case, as that is probably where the defendant is located and can be served with legal papers.
No attorney client relationship is created with this post and no legal advice has been rendered. This is for general informational purposes only and does not apply to any specific set of facts which have been reviewed by me. The information contained in this response has not been verified and is not necessarily accurate or reliable, or applicable to any particular jurisdiction. Always hire a licensed attorney to represent your legal interests.