FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * MASSACHUSETTS MUTUAL LIFE INSURANCE CO   2. Issuer Name and Ticker or Trading Symbol MASSMUTUAL CORPORATE INVESTORS [MCI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) __X__ Other (specify below) Sec 30(h) 10% Debt Holder (Last) (First) (Middle) 1295 STATE STREET 3. Date of Earliest Transaction (Month/Day/Year) 11/15/2007 (Street) SPRINGFIELD, MA 0111 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Senior Fixed Rate Convertible Note due 11/15/2017

(1) (2)

11/15/2007

11/15/2007

J

980,071.87

(3)

(4)

MMCI (5)

980,071.87

$ 30,000,000

980,071.87

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MASSACHUSETTS MUTUAL LIFE INSURANCE CO 1295 STATE STREET SPRINGFIELD, MA 0111				Sec 30(h) 10% Debt Holder

Signatures

By: Richard F. Buckley, Jr. Vice President & Assistant General Counsel		11/19/2007
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Market
(2)	On November 15, 2007, MassMutual Corporate Investors (the ?Trust?) issued to Massachusetts Mutual Life Insurance Company (?MassMutual?) an amended and restated Senior Fixed Rate Convertible Note (the "Note") in the principal amount of $30,000,000 and due on November 15, 2017. MassMutual, at its option, can convert the principal amount of the Note into the Trust?s common shares. The dollar amount of principal would be converted into an equivalent dollar amount of the Trust?s common shares based upon the average price of the common shares for ten business days prior to MassMutual?s notice of conversion. The Note replaced the Trust?s $20,000,000 Senior Convertible Fixed Rate Note held by MassMutual. Babson Capital Management LLC, the Trust?s investment adviser, and Cornerstone Real Estate Advisers LLC (?Cornerstone?) are both wholly-owned indirect subsidiaries of MassMutual. As of November 15, 2007, Cornerstone was the beneficial owner of 27,009 shares of the Trust?s common stock.
(3)	N/A
(4)	11/15/2017
(5)	Issuer's Common

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