As hilarious as this is going to sound, the first thing you need to do is just sing all of the time. Every song you know on the radio (actively try to hum along with songs you don’t know), every song that gets stuck in your head, you even have to mimic the tonal inflections people use when they talk (Um not directly to them, that may perceived negatively). I’m gonna guess that you’re one of those people that thinks that they’re "tone deaf". You’re not. Like, it’s physically impossible for that to happen unless you have nerve damage in your ears or brain damage in your temporal lobes. If you can carry conversation, you have a basic ability to recognize tone changes and produce your own. Conversation itself is a play of rising and falling tones.
That’s the first step. That step is to begin the training of your ear and your vocal range. The next step is to try to mimic singular notes. Like, play a note, and try to sing it exactly. It’s useful to get a little mechanism (ahem a tuner) that will tell you if you’re flat or sharp. Use that to help make your voice match whatever instrument you’re banging notes out on. When you get better at this, try doing scales. They cool. But sometimes super duper duper duper boring. Unless Maria is singing them (shameless Sound of Music reference).
Never stop doing step one, and do step two when you feel like it.
And with these two steps you will start developing your own ideas on what "good" singing is and where YOU fall in that range. The funny thing is with singing (and really a lot of abilities) that it’s usually the best singers who are most aware of their own inabilities and shortcomings. It’s the people that leave you breathless that, while loving the actual act of singing, can sometimes not stand the sound of their own flawed voice. To answer the last question. No. Not possible. There’s really no way to tell if you’ll be a "good" or "bad" singer just by lineage. Understanding and manipulating the delicate balance of presence, variety, and absence that is all human creation is not a result of your parents’ ability to do so.
This applies to singing, there are so many things that make up the huge camp that is "good singing", breathy singers, jumpy singers, soulful singers, sassy singers, silly singers, pitchy singers, pitch perfect singers, precise singers, flexible singers, sad singers. And all of them have a form all of their own that sounds pleasing to the ear and evocative to the emotions. So sing. Sing all of the time. Practice makes you more aware of intricacies you never knew existed.
Essential Guide To Singing: http://bit.ly/2Vg6IHP
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