You said that you had a difficult time practicing your vocal lessons. I don't know if you don't have the time or just don't like to practice. If you decide to learn the bass your going to have to spend ALOT of time practicing. If you don't have the time or not willing to put in the time, maybe the bass is not for you. Whatever you decide to do, best of luck to you. If you do decide to learn the bass and I hope you do, you've come to the right place.