I like this thought.
Some time ago, a pastor preached a Maundy Thursday sermon about the Last Supper and the Communion we were about to partake in. He emphasized that through the communion, the bread and the wine, we were not only fed by Christ, but we were linked, “in communion,” with the members of Christ’s church all over the world, including those from all the past centuries who were now with God, and those of the time to come. This thought has stayed with me when we celebrate communion.
Bonhoffer’s thought may serve to remind me of why we sing. It is a good reason to try music from other cultures and from other times.
My jumping off point for this thought is from Lutheran Zephry
“Christian Worship & the Pastor's Personality” at