This is a repeat thread. I retitled it as I think it better identifies the issue.
I just bought a Roland MC-80 Sequencer. Prior to that I was using a Roland MC-500mkII. The configuation was: 1. midi out from keyboard to midi in of sequencer: 2. midi out from sequencer to midi in of keyboard...
I just bought a Roland MC-80 Sequencer. Prior to that I was using a Roland MC-500mkII. The configuation was: 1. midi out from keyboard to midi in of sequencer: 2. midi out from sequencer to midi in of keyboard: 3. midi thru of keyboard to external sound module and drum rack. Everything worked...