Elegy comes from the Greek word lament. Elegy's are usually about sad things. In Greece these poems were used to describe war and love. Elegy's can also be musical. The term Elegy's means serious meditative poem.
an elegy Poem
The curfew tolls the knell of parting day,The lowing herd wind slowly o'er the leaThe ploughman homeward plods his weary way,And leaves the world to darkness and to me.Now fades the glimm'ring landscape on the sight,And all the air a solemn stillness holds,Save where the beetle wheels his droning flight,And drowsy tinklings lull the distant folds;Save that from yonder ivy-mantled tow'rThe moping owl does to the moon complainOf such, as wand'ring near her secret bow'r,Molest her ancient solitary reign