How many songs are in the album "Musical Math, Vol. 2" by Heidi Butkus?

There are a total of 26 songs in "Musical Math, Vol. 2".

When was the album "Musical Math, Vol. 2" by Heidi Butkus released?

"Musical Math, Vol. 2" was released on September 23, 2015.

#	Track	Artist	Key	Camelot	BPM
1	Greater Than, Fewer Than	Heidi Butkus	F Minor	4A	184
2	Subitize	Heidi Butkus	C Major	8B	108
3	Rekenrek Song	Heidi Butkus	C Major	8B	108
4	Mission Ways to Make Four	Heidi Butkus	B♭ Minor	3A	126
5	What's a Sum?	Heidi Butkus	C Major	8B	108
6	Counting on with Addition	Heidi Butkus	C Major	8B	108
7	Counting by Threes	Heidi Butkus	C Major	8B	108
8	Putting Numbers in Order	Heidi Butkus	C Major	8B	108
9	Odds & Evens	Heidi Butkus	A♭ Major	4B	120
10	Hexagon	Heidi Butkus	C Major	8B	108
11	Trapezoid	Heidi Butkus	C Major	8B	108
12	Cylinder	Heidi Butkus	C Major	8B	108
13	Measuring with a Ruler	Heidi Butkus	D Major	10B	112
14	The Pattern of the Hundreds Chart	Heidi Butkus	C Major	8B	124
15	12 vs. 21	Heidi Butkus	C Major	8B	108
16	Counting Backwards from 20	Heidi Butkus	C Minor	5A	120
17	Telling Time Is Easy	Heidi Butkus	C Major	8B	108
18	One Half	Heidi Butkus	C Major	8B	108
19	One Fourth	Heidi Butkus	C Major	8B	108
20	Counting Coins	Heidi Butkus	C Major	8B	108
21	Adding Numbers to Ten	Heidi Butkus	C Major	8B	120
22	So Many Ways to Solve a Problem	Heidi Butkus	C Major	8B	108
23	Keywords for Addition	Heidi Butkus	C Major	8B	108
24	Keywords for Subtraction	Heidi Butkus	C Minor	5A	132
25	Get on the Ten's Bus!	Heidi Butkus	C Major	8B	108
26	What Is Place Value?	Heidi Butkus	F♯ Minor	11A	136