Created widget to pull data from custom post type. Can't display custom field

Hello, sorta new to making a widget, followed a tutorial. I have created a band website with WordPress and I have a custom post type for creating releases called “music”. I made a plugin and widget so on the sidebar, the user can drag a “latest release” widget to the sidebar.

I created the widget and it pulls the featured thumbnail and title fine. But I need it to also display a custom field called “releasedate”.

here is my code, everything works except the echo to display the custom field data. help?!
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