diff --git a/externals/music.md b/externals/music.md
new file mode 100644
index 0000000..621dc4a
--- /dev/null
+++ b/externals/music.md
@@ -0,0 +1,183 @@
+### Eight Hours
+---------------------------------------------
+
+The song “Eight Hours” was first published in musical form in 1878.  
+The song’s lyrics were written by I.G. Blanchard, and the music was written by Rev. Jesse H. Jones.
+
+
+We mean to make things over,  
+We are tired of toil for naught    
+With but bare enough to live upon  
+And ne'er an hour for thought.  
+We want to feel the sunshine  
+And we want to smell the flow'rs  
+We are sure that God has willed it  
+And we mean to have eight hours;  
+We're summoning our forces  
+From the shipyard, shop and mill  
+Eight hours for work, eight hours for rest  
+Eight hours for what we will;  
+Eight hours for work, eight hours for rest  
+Eight hours for what we will.  
+The beasts that graze the hillside,  
+And the birds that wander free,  
+In the life that God has meted,  
+Have a better life than we.  
+Oh, hands and hearts are weary,  
+And homes are heavy with dole;  
+If our life's to be filled with drudg'ry,  
+What need of a human soul.  
+Shout, shout the lusty rally,  
+From shipyard, shop, and mill.  
+Eight hours for work, eight hours for rest  
+Eight hours for what we will;  
+Eight hours for work, eight hours for rest  
+Eight hours for what we will.  
+
+The voice of God within us  
+Is calling us to stand  
+Erect as is becoming  
+To the work of His right hand.  
+Should he, to whom the Maker  
+His glorious image gave,  
+The meanest of His creatures crouch,  
+A bread-and-butter slave?  
+Let the shout ring down the valleys  
+And echo from every hill.  
+Ye deem they're feeble voices  
+That are raised in labor's cause,  
+But bethink ye of the torrent,  
+And the wild tornado's laws.  
+We say not toil's uprising  
+In terror's shape will come,  
+Yet the world were wise to listen  
+To the monetary hum.  
+Soon, soon the deep toned rally  
+Shall all the nations thrill.  
+Eight hours for work, eight hours for rest  
+Eight hours for what we will;  
+Eight hours for work, eight hours for rest  
+Eight hours for what we will.  
+
+From factories and workshops  
+In long and weary lines,  
+From all the sweltering forges,  
+And from out the sunless mines,  
+Wherever toil is wasting  
+The force of life to live  
+There the bent and battered armies  
+Come to claim what God doth give  
+And the blazon on the banner  
+Doth with hope the nation fill:  
+Eight hours for work, eight hours for rest  
+Eight hours for what we will;  
+Eight hours for work, eight hours for rest  
+Eight hours for what we will.  
+Hurrah, hurrah for labor,  
+For it shall arise in might  
+It has filled the world with plenty,  
+It shall fill the world with light  
+Hurrah, hurrah for labor,  
+It is mustering all its powers  
+And shall march along to victory  
+With the banner of Eight Hours.  
+Shout, shout the echoing rally  
+Till all the welkin thrill.  
+Eight hours for work, eight hours for rest  
+Eight hours for what we will;  
+Eight hours for work, eight hours for rest  
+Eight hours for what we will.  
+
+----------------------------------------------
+
+### 八小时之歌
+
+我们要把世界变个样，  
+我们厌倦了白白的辛劳，  
+光得到仅能糊口的工饷，  
+从没有时间让我们去思考。  
+我们要闻闻花香，  
+我们要晒晒太阳，  
+我们相信：  
+上帝只允许八小时工作日。  
+我们从船坞、车间和工场，  
+召集了我们的队伍，争取  
+（合唱）八小时工作，八小时休息，  
+　　　　八小时归自己！  
+　　　　八小时工作，八小时休息，  
+　　　　八小时归自己！  
+野兽在山边啃着青草，  
+鸟儿在天际自在飞翔。  
+上帝赐给它们的命运  
+比我们还要来得强。  
+满心憔悴啊筋疲力尽，  
+哀愁笼罩我们的家庭。  
+劳劳碌碌这样一辈子，  
+我们何苦到世上来做人。  
+从工厂、船坞和商店  
+传来了群众激情的声浪：  
+（合唱）八小时工作，八小时休息，  
+　　　　八小时归自己！  
+　　　　八小时工作，八小时休息，  
+　　　　八小时归自己！  
+胸中的神在召唤我们，  
+唤我们挺起腰来直起身。  
+这样我们才称得上  
+是上帝亲手所造成。  
+难道说上帝赋予我们  
+这神圣的形象和光彩  
+是要让我们屈尊做贱民？  
+有口饭吃就甘当奴才？  
+让我们一起来高呼吧  
+呼声在高山低谷间回响：  
+（合唱）八小时工作，八小时休息，  
+　　　　八小时归自己！  
+　　　　八小时工作，八小时休息，  
+　　　　八小时归自己！  
+
+不要小看这一片呼声，  
+劳工的声音诚然微小，  
+但它有洪水般凶猛的威力  
+旋风般狂烈又粗豪。  
+今天劳工们共同奋起  
+我们凭借的不是暴力。  
+世人哪一定会明白到  
+这声声的警告不可小视。  
+我们深沉的呼声来势汹涌 
+整个世界也为之久久震荡：  
+（合唱）八小时工作，八小时休息， 
+　　　　八小时归自己！  
+　　　　八小时工作，八小时休息，  
+　　　　八小时归自己！  
+受苦受难的劳动者大军  
+一同来讨还我主的恩赐。  
+他们排成长长的队伍，  
+拖着疲累伤痛的身体。  
+他们来自黑暗的矿井下，  
+他们来自炽热的熔炉旁，  
+他们来自工厂，来自作坊，  
+在那里他们把性命糟蹋光！  
+看吧他们红彤彤的旗帜  
+已点燃起全世界的希望：  
+（合唱）八小时工作，八小时休息，  
+　　　　八小时归自己！  
+　　　　八小时工作，八小时休息，  
+　　　　八小时归自己！  
+我们高呼劳工万万岁，  
+工人一旦奋起便势不可挡。  
+是它使世界变得富足，  
+是它把光明洒遍尘寰。  
+我们高呼劳工万万岁，  
+我们把所有力量团聚在一起，  
+高举“八小时工作”的旗帜，  
+奋勇前进，凯旋而归。  
+让我们一起来高呼，  
+呼声响遍人间和天上：  
+（合唱）八小时工作，八小时休息，  
+　　　　八小时归自己！  
+　　　　八小时工作，八小时休息，  
+　　　　八小时归自己！  
+
+### 链接
+[请问《八小时之歌》英文原版是什么样的？](https://www.zhihu.com/question/65527260)  
+[【中英字幕】八小时之歌 Eight hours（非完整版）](https://www.bilibili.com/video/av39328444/)