UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.2)* MassMutual Corporate Investors _________________________________________________________________ (Name of Issuer) Common Stock _________________________________________________________________ (Title of Class of Securities) 576292106 _________________________________________________________________ (CUSIP Number) December 31, 2000 _________________________________________________________________ (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [X] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). Page 1 of 4 Pages CUSIP No. 576292106 __________________________________________________________________ 1. Name of Reporting Person: MassMutual Life Insurance Company I.R.S. Identification No. of above person: 02-1590850 __________________________________________________________________ 2. Check the Appropriate Box if a Member of a Group: N/A __________________________________________________________________ 3. SEC Use Only __________________________________________________________________ 4. Citizenship or Place of Organization: Commonwealth of Massachusetts __________________________________________________________________ Number of 5. Sole Voting Power: 859,993 Shares Shares Beneficially ______________________________________________ Owned by Each 6. Shared Voting Power: 0 Shares Reporting Person ______________________________________________ With: 7. Sole Dispositive Power: 859,993 Shares ______________________________________________ 8. Shared Dispositive Power 0 Shares __________________________________________________________________ 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 859,993 Shares MassMutual holds a $20,000,000 Senior Fixed Rate Convertible Note which is convertible into an equivalent dollar amount of common shares. __________________________________________________________________ 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) N/A __________________________________________________________________ 11. Percent of Class Represented by Amount in Row (9): 9.1% __________________________________________________________________ 12. Type of Reporting Person: IC Page 2 of 4 Pages Item 1. (a) Name of Issuer: MassMutual Corporate Investors (b Address of Issuers Principal Executive Offices: 1295 State Street Springfield, MA 01111 Item 2. (a) Name of Person Filing: MassMutual Life Insurance Company (b) Address of Principal Business Office: 1295 State Street Springfield, MA 01111 (c) Citizenship: Organized under the laws of the Commonwealth of Massachusetts (d) Title of Class of Securities: Common Shares, par value $1.00 (e) CUSIP Number: 576292106 Item 3. If this statement is filed pursuant to 240.13d-1(b) or 240.13d-2(b) or (c), person filing is: (c) An Investment Adviser in accordance with 240.13d1(b)(1)(ii)(E) Item 4. Ownership (a) Amount beneficially owned: 859,993 Shares (b) Percent of class: 9.1% (c) Number of shares as to which the person has: (i) Sole power to vote or to direct the vote: 859,993 Shares (ii) Shared power to vote or to direct the vote: 0 shares (iii) Sole power to dispose or to direct the disposition of: 859,993 Shares (iv) Shared power to dispose or to direct the disposition of: 0 Shares Item 5. Ownership of Five Percent or Less of a Class: N/A Item 6. Ownership of More than Five Percent on Behalf of Another Person: N/A Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company: N/A Page 3 of 4 Pages Item 8. Identification and Classification of Members of the Group: N/A Item 9. Notice of Dissolution of the Group: N/A Item 10. Certification By signing below I certify that, to the best of my knowledge and Belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. February 7, 2001 //Stephen Kuhn// Stephen Kuhn Senior Vice President and Deputy General Counsel Page 4 of 4 Pages