He is yesterday, today and tomorrow. As believers, our story has a past. It's an apostolic past, filled with miraculous accounts, sacraments and the cumulative wisdom of creeds. People who don't know their past know little of their present identity nor their future destination. Worship did not begin in this decade.
Christians have a past, a present and a promised future.
This means as planners and leaders of worship we balance the sails of our experimental creativity with the anchors of our non-negotiable orthodoxy. Real worship is a gift given to those who thirst after it. Most often that thirst is evidenced by godly integrity, deep humility, costly prayer, the search of an honest heart and mind, unending courage and the anointing breath of the Spirit of God. Tradition, to be authentic, must serve the present age and is thereby contemporary. So if those elements are being utilized in what is termed contemporary worship, that worship is in some degree traditional.