Mentioned in Romeo and Juliet act IV, scene 5:

Peter: Musicians, O musicians, ‘Heart’s Ease, Heart’s Ease:’ O, an you will have me live, play ‘Heart’s Ease.’

First Musician: Why ‘Heart’s Ease?’

Peter: O musicians, because my heart itself plays ‘My heart is full of woe.’ O, play me some merry dump to comfort me.

First Musician: Not a dump, we. 'Tis no time to play now.