Music comes from the heart.

HEART:
heart [haart] (plural hearts) noun
1.PHYSIOLOGY blood-pumping organ: a hollow muscular organ that pumps blood around the body, in humans situated in the center of the chest with its apex directed to the left
2.ANATOMY position of chest above heart: the area on the front of the human body that corresponds roughly to the position of the heart
3.basis of emotional life: the human heart, considered as the source and center of emotional life, where the deepest and sincerest feelings are located and an individual is most vulnerable to pain
4.character: somebodys essential character
Hes an abrupt-sounding cuss, but hes got a very good heart.
5.compassion: the ability to feel humane and altruistic feelings
If she had any heart she would forgive him.
6.affection: affection, love, or warm admiration
The choruss singing won the hearts of the audience.
7.spirit: the capacity for courage and determination
The team played with a lot of heart.
They put their whole hearts into making a go of the business.
8.disposition: a mood, mental state, or frame of mind
9.essential part of something: the distinctive, significant, and characteristic center of something
the heart of rural America
10.PLANTS part of vegetable around core: the often tasty or succulent compact central part of a vegetable, for example, a lettuce or cabbage, where the leaves curl in tightly
artichoke hearts
11.FOOD animal heart used as food: the heart of an animal that is cleaned and trimmed, then roasted, stewed, or braised as food
12.symbolic depiction of heart: a simplified and conventionalized picture of a heart as a rounded, roughly triangular shape, often used to signify love
13.CARD GAMES playing card: any one of a suit of cards marked with a symbolic depiction of one or more hearts.
See also hearts noun 1
14.beloved person: somebody who is dearly loved
Come to me, dear heart.
[Old English heorte. Related to German Herz.]
at heart
in essence or reality, and despite contrary appearances
break somebodys heart
to cause somebody intense unhappiness and suffering
do somebodys heart good
to make somebody feel happy or satisfied
eat your heart out
1.to brood about something that makes you feel unhappy (informal)
2.to be consumed with envy
have somebodys welfare or interests at heart
to have somebodys well-being or interests in mind
heart and soul
completely, or with the greatest devotion
in your heart of hearts
in your deepest inner feelings
learn or know something by heart
to memorize or have memorized something
lose heart
to become discouraged
not have the heart to do something
to be unable to bring yourself to do something that is liable to hurt somebody else
set your heart on something or have your heart set on something
to have something as your ambition or greatest wish
take heart
to become encouraged and more confident
take something to heart
1.to take something seriously
2.to be upset by something
wear your heart on your sleeve
to reveal your feelings openly
with all your heart
completely or very willingly
Encarta® World English Dictionary

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And there is the Definition
