Write SQL query to solve given problem: List the name of artists who have released albums and mixtape from 1980 to 1985 in "dance" genre.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(T1.artist) FROM torrents AS T1 INNER JOIN tags AS T2 ON T1.id = T2.id WHERE T2.tag = 'dance' AND T1.groupYear BETWEEN 1980 AND 1985 AND T1.releaseType LIKE 'album' OR T1.releaseType LIKE 'mixtape'