Table 1.

Subjects' piano training and performance

Subject #	Professional /Amateur	Age (yrs)	Age training began (yrs)	# years training	Inter-keystroke Interval (IKI, ms)	MIDI velocity	Contact Duration (ms)
1	P	36	4	32	122±3	105±2	127±5
2	P	30	3	27	124±4	102±2	127±6
3	P	26	6	20	126±2	86±1	120±8
4	P	28	8	20	123±1	94±4	123±9
5	P	44	3	41	124±3	96±3	137±9
6	A	20	6	14	143±6	85±2	136±10
7	A	40	4	30	124±3	84±3	126±10
8	A	33	5	25	140±3	85±1	147±10
9	A	54	6	48	147±5	80±2	131±4
10	A	19	5	14	155±5	84±2	152±7

Values for IKI and MIDI velocity, and contact duration are mean ±SD