Answer:
Only an external cost.
Step-by-step explanation:
This would be an example of an external cost. An external cost is a cost that is incurred by an individual or a community due to a transaction that they were not actually involved in. In this example, the neighbors are kept awake by the concert, even though they did not purchase tickets or benefitted from the organizing of the concert in any way. These costs are also known as "spillovers."