Keyword Analysis & Research: when were the first operas composed

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when were the first operas composed	0.3	1	6128	68	35
when	0.63	0.3	5561	86	4
were	1.67	0.3	9527	52	4
the	0.13	0.6	5383	23	3
first	1.45	0.2	5514	20	5
operas	1.51	0.9	5139	53	6
composed	0.09	0.7	8988	91	8

Keyword	CPC	PCC	Volume	Score
when were the first operas composed	1.42	0.9	1801	60