The prayer of Acts 4:24 began, “Master of all…” which is quite an acceptable way to address God. While some people address deity as “Lord,” or “God,” I prefer to address him as “Lord God.”
King David’s song of thanks uses this address. He said, “May the Lord God of Israel be praised, in the future and forevermore.Then all the people said, ‘We agree!’” (1 Chronicles 16:36 NET). I realize that some translations use the definite article with this address, but the KJV, NKJV and NET do not.
Just to be clear, this is not an attempt to force others to use the same address, since this is my own personal opinion.
Bro. Wayne Jackson has a very good article about the names of God on his website, http://www.christiancourier.com/articles/305-what-about-the-names-of-god