1. A musical performance evaluation device comprising: a first obtaining section which obtains number of notes for each skill type from note data included in a segment of an inputted musical piece, among pieces of note data including at least a skill value and a skill type for each sound constituting the musical piece; a second obtaining section which obtains number of correctly played notes for each skill type by comparing the note data included in the predetermined segment of the inputted musical piece among the pieces of note data and inputted musical performance data; and an evaluating section which accumulates evaluation values of respective skill types each obtained based on an accuracy rate for each skill type defined by the number of notes and the number of correctly played notes for each skill type obtained by the first obtaining section and the second obtaining section and a skill value of each skill type, and generates a musical performance evaluation value.