UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO

§ 240.13d-2(a)

(Amendment No. 10)1

MakeMusic, Inc.

(Name of Issuer)

Common Stock, $.01 par value

(Title of Class of Securities)

56086P202

(CUSIP Number)

STEVE WOLOSKY, ESQ.

OLSHAN FROME WOLOSKY LLP

Park Avenue Tower

65 East 55th Street

New York, New York 10022

(212) 451-2300

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

April 18, 2013

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box ¨.

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See § 240.13d-7 for other parties to whom copies are to be sent.

_______________

1 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 disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities 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).

CUSIP NO. 56086P202

1	NAME OF REPORTING PERSON LAUNCHEQUITY ACQUISITION PARTNERS, LLC DESIGNATED SERIES EDUCATION PARTNERS
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS WC, AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 1,362,829
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 1,362,829
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,362,829
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 27.8%
14	TYPE OF REPORTING PERSON OO

CUSIP NO. 56086P202

1	NAME OF REPORTING PERSON LAUNCHEQUITY PARTNERS, LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION ARIZONA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 1,362,829
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 1,362,829
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,362,829
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 27.8%
14	TYPE OF REPORTING PERSON OO

CUSIP NO. 56086P202

1	NAME OF REPORTING PERSON ANDREW C. STEPHENS
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 1,362,829
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 1,362,829
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,362,829
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 27.8%
14	TYPE OF REPORTING PERSON IN

CUSIP NO. 56086P202

1	NAME OF REPORTING PERSON JANE KIM
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS AF
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 1,362,829
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 1,362,829
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,362,829
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 27.8%
14	TYPE OF REPORTING PERSON IN

CUSIP NO. 56086P202

1	NAME OF REPORTING PERSON LEAP ACQUISITION CORPORATION
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION MINNESOTA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON - 0 -
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0%
14	TYPE OF REPORTING PERSON CO

CUSIP NO. 56086P202

The following constitutes Amendment No. 10 to the Schedule 13D filed by the undersigned (“Amendment No. 10”). This Amendment No. 10 amends the Schedule 13D as specifically set forth herein.

Item 4.

Purpose of Transaction.

Item 4 is hereby amended to add the following:

On March 22, 2013, LAC commenced the Offer pursuant to the terms of the Merger Agreement (as such terms are defined in Amendment No. 9 to the Schedule 13D). Pursuant to the Merger Agreement, the Offer was scheduled to expire at midnight, New York City time, on April 18, 2013. On April 18, 2013, the Issuer, LEAP, LAC and LEP entered into a letter agreement (the “Letter Agreement”) pursuant to which they mutually agreed that LAC will extend the Offer until midnight, New York City time, on April 30, 2013. On April 18, 2013, the Issuer, LEAP, LAC and LEP issued a joint press release announcing the extension of the Offer. A copy of each of the Letter Agreement and joint press release is attached as Exhibit (d)(6) and Exhibit (a)(5)(iv), respectively, to LEP’s Schedule TO-T Amendment filed with the SEC on April 18, 2013 and incorporated herein by reference.

Item 6.

Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.

Item 6 is hereby amended to add the following:

On April 18, 2013, the Issuer, LEAP, LAC and LEP entered into the Letter Agreement, as defined and described in Item 4 above.

Other than as described herein, there are no contracts, arrangements, understandings or relationships among the Reporting Persons, or between the Reporting Persons and any other person, with respect to the securities of the Issuer.

Item 7.

Material to be Filed as Exhibits.

Item 7 is hereby amended to add the following exhibits:

99.1

Letter Agreement, dated as of April 18, 2013, by and among LaunchEquity Acquisition Partners, LLC Designated Series Education Partners, LEAP Acquisition Corporation, LaunchEquity Partners, LLC, and MakeMusic, Inc. (incorporated herein by reference to Exhibit (d)(6) to LaunchEquity Partners, LLC’s Schedule TO-T Amendment filed with the SEC on April 18, 2013).

99.2

Press Release issued by LaunchEquity Partners, LLC and MakeMusic, Inc. on April 18, 2013 (incorporated herein by reference to Exhibit (a)(5)(iv) to LaunchEquity Partners, LLC’s Schedule TO-T Amendment filed with the SEC on April 18, 2013).

CUSIP NO. 56086P202

SIGNATURES

After reasonable inquiry and to the best of his knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated: April 22, 2013	LAUNCHEQUITY ACQUISITION PARTNERS, LLC DESIGNATED SERIES EDUCATION PARTNERS

	By:	LaunchEquity Partners, LLC Manager

	By:	/s/ Andrew C. Stephens
		Andrew C. Stephens Managing Member

	LAUNCHEQUITY PARTNERS, LLC

	By:	/s/ Andrew C. Stephens
		Andrew C. Stephens Managing Member

	LEAP ACQUISITION CORPORATION

	By:	/s/ Andrew C. Stephens
		Andrew C. Stephens Chief Executive Officer

	/s/ Andrew C. Stephens
	ANDREW C. STEPHENS

	/s/ Jane Kim
	JANE KIM

MAKEMUSIC, INC. SC 13D/A