Are there either speakers or headphones in this scene?
Yes, there are headphones.
    src        edge_attr  dst
0     0  to the right of    2
1     1   to the left of    9
2     2   to the left of    3
3     2   to the left of    7
4     2  to the right of    9
5     2   to the left of    0
6     3  to the right of    9
7     3  to the right of    2
8     5               on    6
9     5   to the left of   10
10    5   to the left of    8
11    7  to the right of    2
12    7  to the right of    9
13    8  to the right of    5
14    9   to the left of    3
15    9   to the left of    7
16    9  to the right of    1
17    9   to the left of    2
18   10  to the right of    5
19   12               on   11