text: 'use strict'
  
  var str = require('./str')
  var parse = require('./parse')
  /**
   * Get a pitch from a string. In tonal a pitch it's a note, an interval or a
   * pitch class. It allows us to work with this elements in an uniform way.
   *
   * @name pitch
   * @function
   * @param {String} source - the string
   * @return {String} the pitch or null if not a valid pitch
   *
   * @example
   * var pitch = require('music.pitch')
   * pitch('c2') // => 'C2'
   * pitch('2') // => '2M'
   * pitch('blah') // => null
   */
  module.exports = function (s) { return str(parse(s)) }
  