meta_query with array in value not working

Hi to all!

I’ve got this query:

$args = array('category_name' => 'test','posts_per_page' => -1,'relation' => 'AND',
       'meta_query'    => array('relation'      => 'AND',
               array(
                       'key'       => 'tipus',
                       'value'     => 'music',
                       'compare'   => 'LIKE'
               ), ...
       )
);

Ok, work’s!

But if I change 'music'for array('music') and 'LIKE' for 'IN' …

$args = array('category_name' => 'test','posts_per_page' => -1,'relation' => 'AND',
       'meta_query'    => array('relation'      => 'AND',
               array(
                       'key'       => 'tipus',
                       'value'     => array('music'),
                       'compare'   => 'IN'
               ), ...
       )
);

Doesn’t work! :_(

What I’m missing?

Thank’s