There are already far too many people who want a career in forensics. It is the 'CSI' and 'NCIS' effect. There are not that many jobs and it is not like they show it on TV. There are far more jobs in pathology or in the law enforcement industries that are related to your field of interest.
With the observational and analytical skills you enjoy, there are many careers where these would be a real asset, including the law, research and development, engineering ... and many others.
Many of us who can sing or play an instrument do so in bars and clubs outside of work or college time. We can establish our reputation locally and maybe, like a few of my friends from the music clubs, eventually turn professional. Some are semi-professional, getting paid for musical performances while also having a regular job.
It can be done if you have the skills and the stamina and can earn enough to get by.