How many bands are credited with the start of grunge music?
4
3
3
3
3
4
3
4
3
4
3
4
3
4
3
4
3
2
4
3
1
2
4
3
5
1
2
4
3
5
1
2
4
3
5
1
2
4
3
5
1
2
4
3
5
1
2
4
3
5
1
2
4
3
5
1
2
4
3
5
1
2
4
3
5
1
2
4
5
1
2
4
5
1
2
4
5
1
2
4
5
1
2
5
1
2
5
1
2
5
1
7
2
6
5
1
7
2
6
5
1
7
2
6
5
1
7
6
5
7
6
7
6
7
No
6
7
No
6
7
No
13
6
8
9
7
No
13
6
8
9
7
No
13
6
8
9
7
No
13
6
8
9
7
No
13
6
8
9
10
7
No
13
6
8
9
10
7
No
13
6
8
9
10
7
No
13
6
8
9
10
7
No
11
13
One
6
8
9
10
7
No
11
13
One
6
8
9
10
7
No
11
13
One
6
8
4 bands
4 bands
3.
5 bands
4 bands