if you are not sure about committing to learning how to be the best musician you can be then maybe being a musician is not for you
too many people look at music theory as something that can damage their creativity when in fact it only serves to make your creativity more fertile
as I recently reread somewhere here at fp, it is the same thing as asking how can I read and write without having to learn about words, spelling, punctuation, grammar and the alphabet - you can't do it - you might be able to speak the language but you would be hard pressed to do anything about reading and writing without methodical, paced instruction in the intricacies of spelling, grammar, punctuation etc.
sure you could use dragon naturally speaking to transcribe your spoken words but unless you can read how do you know it has correctly taken down what you have said?
i.e. being competent in the oral tradition of a language does not make you more creative than someone who has studied the written intricacies of the language, in fact it makes you less able and less competent, as you do not have the devices and intimate understanding of the nuances of the language that you both use
there are no shortcuts or things that you can leave out.
The problem with learning anything is that unless there is a straight, linear progression of learning, you are actually spending time spiraling through the curriculum; i.e. you learn some, go away and apply it, come back and learn that topic a little deeper, go away and apply it, come back and learn it a little deeper still and so on.
Start with
- notes - pitch and where to find it on the stave in both bass and treble clefs
- durations - lengths of sounds and silences
- rhythm - combinations of durations
- meter - grouping of rhythmic ideas into bars, motives, phrases and more
- melody - rhythm and pitch combined - horizontal development, decoration and imitation
- harmony - vertical alignment of notes to create chords, although arpeggios are chords spaced out over time. Progression from chord to chord is a second tier of harmony
- orchestration - assigning instruments to parts
- arranging - melody, counter-melody, harmonic movement, rhythmic impetus
- formal structures - song forms and sections/segments
move through each. As you find that you become confused with one area move on to the next to consolidate your understanding of all these things at the one level. Return to each area and learn more once you have applied your initial knowledge. Rinse and repeat, delving deeper each time....