How many songs are in the album "Duette 1977-2007" by Polo Hofer?

There are a total of 19 songs in "Duette 1977-2007".

When was the album "Duette 1977-2007" by Polo Hofer released?

"Duette 1977-2007" was released on March 24, 2007.

#	Track	Artist	Key	Camelot	BPM
1	Alperose 07	Polo Hofer, Sina, Sandee, Kandlbauer	E Major	12B	120
2	Eine nähme mer no	Polo Hofer, Gölä	C Major	8B	142
3	Nachtigall	Polo Hofer, Sandee	D Major	10B	121
4	Hopp Schwiiz/Suisse	Polo Hofer, QL	B♭ Minor	3A	90
5	Rösslispiel	Polo Hofer, Schmidi Schmidhauser	A Major	11B	146
6	Nüt meh als am Stüür	Polo Hofer, Büne Huber	C Major	8B	121
7	Wenn es nötig wär	Polo Hofer, Sina	G Major	9B	79
8	Olivia (Salat Song)	Polo Hofer, Endo Anaconda	B Major	1B	170
9	I ha mir Sorge gmacht	Polo Hofer, Dodo Hug	D Major	10B	154
10	So geit das scho syt Jahre	Polo Hofer, Jacky, John Brack	C Major	8B	108
11	Sogar ä Depp würds la sy	Polo Hofer, Liliane Michel	D Major	10B	154
12	Chrüzwäg	Polo Hofer, Vera Kaa	A Minor	8A	66
13	Giggerig	Polo Hofer, Sandra Goldner	A Major	11B	164
14	Wart doch, i chume	Polo Hofer, Marc Dietrich	B Minor	10A	111
15	Wie ne Falter zum Füür	Polo Hofer, Marianna Polistena	F♯ Major	2B	138
16	Tänzerin (Nacht für Nacht)	Polo Hofer, Küre Güdel	D♭ Major	3B	110
17	Forever Young	Polo Hofer, Yvonne Moore	C Major	8B	142
18	Bring It On Home To Me	Polo Hofer, Jessy Howe	A Major	11B	95
19	Lonesome Whistle	Polo Hofer, Philipp Fankhauser	E Major	12B	122