Write SQL query to solve given problem: What is the release title of the single under the "funk" tag that was released the oldest?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.groupName FROM torrents AS T1 INNER JOIN tags AS T2 ON T1.id = T2.id WHERE T2.tag LIKE 'funk' AND T1.releaseType = 'single' ORDER BY T1.groupYear LIMIT 1