How many different keyboard players were official members of the Grateful Dead?
5
3
3
3
2
3
4
2
3
4
2
3
4
2
3
4
2
3
4
2
3
4
2
3
5
4
2
3
5
4
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
1
3
5
4
2
7
1
3
5
4
2
6
7
1
5
4
2
6
7
1
5
4
2
6
7
1
5
4
6
7
1
5
0
8
6
7
1
5
8
6
7
1
5
8
6
7
1
5
8
6
7
1
5
9
8
6
7
1
5
9
8
6
7
1
11
9
8
6
7
1
11
9
8
13
6
7
11
9
8
13
6
7
11
9
8
13
6
7
11
9
8
13
6
7
11
9
10
8
13
6
7
11
9
10
8
13
6
7
11
9
10
8
13
6
7
12
11
9
10
8
13
6
7
12
11
9
10
8
13
6
12
11
14
108
ten