Sing to be happy?

Song expresses joy

Song suppresses the opposite[1]

At times we sing to change the mood

Just make sure you know who composed the song

For the new mood might be one you don’t want

You got to know who’s under the hood

Does he live in the hood?

Or is he where he should?[2]

Escaping with a sweet tune

It’s not really an escape

One is really coming home

Tapping into to his deeper self

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[1] See Sefer Hamamorim 5680 p. 15 about these two forms of song

[2] General sources in Torah about non-Jewish music see here, for some Chabad sources see here