As with the CompleteAllQuestStages command - this command may cause bugs, so it is recommended that you first save your game. This console command completes the quest with the specified ID.
completequest [quest id]
| Quest ID | The quest ID of the quest you wish to complete. |
completequest BardsCollegeDrum
Rjorn's Drum has a quest ID of BardsCollegeDrum. This command would complete the quest Rjorn's Drum.