added instrument modulation
ParallelBuilder and SequentialBuilder now implicit in Note creation implicit transform
reverting depth controlled addition to simpler implementation
code adapted to new operators. Special feature on +/| operators in note (~allow left associativity)
Tested and corrected custom selectors
constructors of parallel and sequential segments removed to let melody abstract
Analysis on Part1 recuerdos, discovering patterns and abstracting them in methods
work in progress