How to get all notes comma separated group by customer

SQL Query - How to get all notes comma separated group by customer

NoteKey	CustomerKey	Note	LastEditedTime
1	18736673	Accout access error, Contact Technical team.	01/02/2013

SELECT n1.CustomerKey, (SELECT ','+  n2.Note+ ' Last Edited Time:' + convert(varchar(26),n2.LastEditedTime)
       FROM Note n2
       WHERE n1.CustomerKey= n2.CustomerKey
       ORDER BY CustomerKey, Note  
       FOR XML PATH('')) AS CustNote
       FROM Note n1
Group By n1.CustomerKey