There is one very basic thing about seeking a career in music in the 21st century. That is you must have sufficient enthusiasm. The enthusiasm that is needed to keep you motivated and working through thick and thin is considerable.
The profession of a musician is a tough one and one that takes an awful lot of work and dedication to attain. You can also look for the 'original music' (also known as 'musique originale' in the French Language) design company via online sources.
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When you have decided that your passion is so great that you must indulge in it and become a musician then you have to realize that you will be working very hard for several years before reaching the level of professionalism. After that not only must you have the talent but also you will have to have a bit of luck as well.
If you are going to be a singer then the competition gets even greater. Try to list for yourself how many full time singing positions there are in the world in the area you desire to work. Contrast that with the number of great singers who are out there looking for work.
However, on the positive side of all this is that being a musician is the greatest profession and if you have the passion and talent to drive you, there is no life you can have that would be better.
So, it is up to you, isn't it? The important thing is to pursue your career with intelligence, discipline, plan, and passion and be ready to learn to cope with the difficult world of the professional musician.