can we add extra table or column in wordpress for adding our data

You may not need extra custom tables. Create a custom post type for songs. Then store all the required data (link, name, date, size, etc.) as post meta data.

The songs would be stored in the wp_posts table and the metadata in wp_postmeta.

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Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)