To determine how many students chose streaming music, you need to know the percentage or proportion of students who preferred this activity from the survey data. If you have a percentage or fraction for students who chose streaming music, you can calculate it as:

$\text{Number of students who chose streaming music} = \text{Total students surveyed} \times \text{Percentage/Proportion for streaming music}$

If the percentage of students who chose streaming music is available, substitute that value and calculate the result. For example:

1. If 30% of students preferred streaming music: $\text{Number of students} = 1500 \times \frac{30}{100} = 450$

2. If no specific percentage is given, you would need additional data to compute the result.

Do you have a percentage or proportion for streaming music from the survey results? Let me know so I can refine the calculation!