python编写摇滚乐（musicpy库要下载）

from musicpy import *

guitar = ((C('Cmaj7')@1)@[1,2,3,4,1,2,3,2] |

(C('Fmaj7',3)^2)@[1,2,3,4,1,2,3,2] |

(C('G7sus',3)^2)@[1,2,3,4,1,2,3,2] |

C('Am11',3)@[1,2,4,6,1,4,6,4] |

(C('Cmaj7')@1)@[1,2,3,4,1,2,3,2] |

C('Fadd9',3).up(2,1)@[1,2,3,4,1,2,3,2] |

(C('G7sus',3)^2)@[1,2,3,4,1,2,3,2] |

C('Am11',3)@[1,2,4,6,1,4,6,4]) % (1/2,1/8)

guitar2 = (C('Am11',3)@[1,2,4,6,1,4,6,4] |

(C('Em7',3)^2)@[1,2,3,4,1,2,3,2] |

(C('Fmaj9',3)^2)@[1,2,3,4,1,2,3,2] |

(C('Cmaj9')^2)@[1,2,3,4,1,2,3,2] |

C('Am11',3)@[1,2,4,6,1,4,6,4] |

(C('Em7',3)^2)@[1,2,3,4,1,2,3,2] |

(C('Fmaj9',3)^2)@[1,2,3,4,1,2,3,2] |

(C('Cmaj9')^2)@[1,2,3,4,1,2,3,2]) % (1/2,1/8)

bass1 = chord('D2[.8;.],E2[.8;.],D2[.8;.],E2[1;.], F2[1;.], G2[1;.], A1[.2;.], A2[.8;.], G2[.8;.], E2[.8;.], D2[.8;.]')

bass2 = (chord('E2')*8 + chord('F1')*8 + chord('G1')*8 + chord('A1,A1,E2,A1,A2,A1,G2,D2')) % (1/8,1/8) * 2

bass3 = (chord('A2')*8 + chord('E2')*8 + chord('F2')*8 + chord('C2,C2,G2,C2,C3,C2,G2,C2')) % (1/8,1/8) * 2

bass = bass1 | bass2 | bass3

rhythm_guitar = (C('A5(+octave)',2, 1) | C('E5(+octave)',2, 1) | C('F5(+octave)',2, 1) | C('C5(+octave)',3, 1/2)| C('G5(+octave)',2, 1/2)) * 2

string1 = chord('B5[1;.],C6[1;.],D6[.2;.],E6[.2;.],\

F6[.2;.],E6[.2;.],C6[1;.],B5[.2;.],C6[.2;.],G5[1;.],\

F5[.2;.],E5[.2;.],C5[1;.],D5[.4;.],E5[.4;.],F5[.4;.],\

E5[.4;.],D5[.2;.],G5[.2;.],E5[1;.]')

drum1 = drum('K, H, S, H, r:2, K, H, OH;S, H, K, H, S, H').notes

drum1.set_volume(112)

result = piece([guitar * 2 | guitar2, bass, string1, rhythm_guitar,drum1 * 4 + 2],

               [2, 34, 49, 31, 1],

               bpm=165,

               start_times=[0, 4-3/8, 12, 16, 16],

               channels=[0,1,2,3,9])

play(result-2)