Analyze a customer review and detect if there is any sentiment in it.
Customer review: This product is a total disappointment.
The analysis of the customer review shows that it contains a negative sentiment. The use of words such as "total disappointment" indicates dissatisfaction and frustration.
Complete the following task based on the instruction and optional input provided.### Instruction:
Analyze a customer review and detect if there is any sentiment in it.

### Input:
Customer review: This product is a total disappointment.

### Output:
The analysis of the customer review shows that it contains a negative sentiment. The use of words such as "total disappointment" indicates dissatisfaction and frustration.