Elegy :D

Definition: A tragedy type of poem that talks about a lost or death of someone or something. It's usually sad.
Example:

Death, be not proud though some have called thee
Mighty and dreadful, for thou art not so,
For those, whom thou think'st thou dost overthrow,
Die not, poor Death, nor yet canst thou kill me. 

Explanation: To remember and to show respect towards someone that has descended.