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PAGE 2
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PAGE 3
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PAGE 7
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PAGE 9
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SIGNATURE CHARLES C. MCCOBB, JR.
TITLE V.P. AND C.F.O.
EXHIBIT INDEX TO FORM N-SAR
OF MASSMUTUAL CORPORATE INVESTORS
FOR SEMI-ANNUAL PERIOD ENDED DECEMBER 31, 2003
EXHIBIT NO. DESCRIPTION
77B Accountant's Report on Internal Control
77E Legal Proceedings
77K Changes in Registrant's Certifying Accountant
77Q1(a) Information Called for by the Instruction to Sub-Item 77Q1(a)
77Q2 Information Called for by the Instruction to Sub-Item 77Q2