Pemeran Do Do Sol Sol La La Sol

Go A Ra (고아라)

as Goo Ra Ra

Pemeran Utama

Lee Jae Wook (이재욱)

as Sun Woo Joon

Pemeran Utama

Kim Joo Heon

as Cha Eun Seok

Pemeran Utama

Ye Ji Won

as Jin Sook Kyung

Pemeran Pembantu

Shin Eun Soo (신은수)

as Jin Ha Young

Pemeran Pembantu

Lee Soon Jae

as Kim Man Bok

Pemeran Pembantu

Moon Tae Yu

as Bang Jung Nam

Pemeran Pembantu

Choi Kwang Je

as Choo Min Soo [Private detective]

Pemeran Pembantu

Oh Gi Gwang

as Lee Seung Gi [Ha Yeong's friend]

Pemeran Pembantu

Seo Yi Sook

as Jo Yoon Shil [Woo Joon's mother]

Pemeran Pembantu

Choi Kwang Il

as Sun Woo Myung [Woo Joon's father]

Pemeran Pembantu

Lee Seo An (이서안)

as Oh Young Joo [Eun Seok's ex-wife]

Pemeran Pembantu

Park Sung Yun

as [Seung Gi's mother]

Pemeran Pembantu

Lee Seon Hee

as [Ye Seo's mother]

Pemeran Pembantu

Kim Jung Yeon

as Mi Ran [Sook Kyung's friend]

Pemeran Pembantu

Song Min Jae

as Shin Jae Min [Ra Ra's student]

Pemeran Pembantu

Kang Hyung Suk

as Ahn Joong Ho [Ra Ra's stalker]

Pemeran Pembantu

Kong Jin Seo

as Min Ju (Ep. 1)

Bintang Tamu

Kim Gyu Ri

as Goo Ra Ra [Teen] (Ep. 1)

Bintang Tamu

Park So Yi

as Goo Ra Ra [6-years-old] (Ep. 1, 3)

Bintang Tamu

Jang In Ho

as [Detective] (Ep. 1)

Bintang Tamu

Song Kyung A

as [Piano judge] (Ep. 1)

Bintang Tamu

Kwon Ban Suk

as [Wedding guest] (Ep. 1)

Bintang Tamu

Yoo Yong

as [Wedding guest] (Ep. 1)

Bintang Tamu

Song Hoon

as [Wedding guest] (Ep. 1)

Bintang Tamu

Kim Oh Bok

as [Wedding guest] (Ep. 1)

Bintang Tamu

Lee Mi Yoon

as [Real estate agent] (Ep. 1)

Bintang Tamu

Kim Hae Gon

as [Real estate agent] (Ep. 1)

Bintang Tamu

Kyung Ki Hyun

as [Studio rental clerk] (Ep. 1)

Bintang Tamu

Lee Hyun Seo

as [Apartment renter] (Ep. 1)

Bintang Tamu

O Gyu Taek

as [Construction foreman] (Ep. 1)

Bintang Tamu

Shin Seung Yong

as [Motorcycle deliveryman] (Ep. 1)

Bintang Tamu

Chae Yoo Ri

as Na Gyeom (Ep. 2)

Bintang Tamu

Seol Chang Hee

as [Veterinarian] (Ep. 2)

Bintang Tamu

Kim Geon Ho

as [Good&Good speaker] (Ep. 2)

Bintang Tamu

Seon Yul U

as [Good&Good security] (Ep. 2)

Bintang Tamu

Seo Wang Seok

as [Good&Good security] (Ep. 2)

Bintang Tamu

Seo Wang Seok

as [Good&Good security] (Ep. 2)

Bintang Tamu

Kang Sang Chul

as [Man watching columbarium] (Ep. 2)

Bintang Tamu

as [Man watching columbarium] (Ep. 2)

Bintang Tamu

Jang Eui Don

as [Yacht captain] (Ep. 3)

Bintang Tamu

Kim Seo Jun

as [Piano Academy student] (Ep. 3)

Bintang Tamu

Yoo Mi Ran

as [Piano Academy owner] (Ep. 3-4)

Bintang Tamu

Yoo Mi Ran

as [Piano Academy owner] (Ep. 3-4)

Bintang Tamu

Kim Yong Jin

as [Sandwich shop manager] (Ep. 3-5)

Bintang Tamu

Kim Bum Suk

as Kang Min Guk [Detective] (Ep. 4-6)

Bintang Tamu

Cha Sang Mi

as [Maid] (Ep. 4, 11)

Bintang Tamu

Kim Young Joo

as [Detective] (Ep. 4)

Bintang Tamu

Kim Young Joo

as [Detective] (Ep. 4)

Bintang Tamu

Kwon Ki Joo

as [Piano deliveryman] (Ep. 4)

Bintang Tamu

Kim Moon Ho

as [Grand opening guest] (Ep. 4)

Bintang Tamu

Yoo Tae Joo

as [Eunpo Taekwondo staff] (Ep. 4)

Bintang Tamu

Choi Soo Hyun

as [Eunpo Terminal clerk] (Ep. 5)

Bintang Tamu

Choi Soo Hyun

as [Eunpo Terminal clerk] (Ep. 5)

Bintang Tamu

Lee Si Woo (이시우)

as Kim Ji Hoon (Ep. 6, 14)

Bintang Tamu

Lee Seung Hee

as [Clothing store employee] (Ep. 6)

Bintang Tamu

Kim Jae Heum

as [Eunpo Terminal convenience store clerk] (Ep. 6)

Bintang Tamu

Kim Shi Heon

as [Appliance salesman] (Ep. 7)

Bintang Tamu

Jang Joo Yeon

as [Piano Academy parent] (Ep. 7)

Bintang Tamu

Min Jung Sup

as Detective Min (Ep. 10)

Bintang Tamu

Lee Hye Eun

as [Nurse] (Ep. 12)

Bintang Tamu

Kim Tae Hoon

as [Doctor] (Ep. 12)

Bintang Tamu

Lee Ki Sub

as [Doctor] (Ep. 12)

Bintang Tamu

Kwon Eun Bin

as Jung Ga Young (Ep. 13-15)

Bintang Tamu

Jang Ga Hyun

as [Actor] (Ep. 13)

Bintang Tamu

Heo Seon Haeng

as [New business owner] (Ep. 13)

Bintang Tamu

Kim Jong Ho

as [Former owner of piano shop] (Ep. 13)

Bintang Tamu

Im Jae Geun

as Mr. Kim

Bintang Tamu

Lee Shi Yoo

as [Nurse]

Bintang Tamu

Seo Yun Hyuk

Bintang Tamu

Jung Hee Young

as [Street vendor] (Ep. 1)

Bintang Tamu

Kim Jong Ho

as [Real estate agent] (Ep. 11, 13)

Bintang Tamu

Jeon Soo Kyung

as Im Ja Kyung [Jung Nam's mother] (Ep. 1, 8)

Bintang Tamu

Moon Hee Kyung

as Kong Mi Suk [Ra Ra's piano teacher] (Ep. 1-3, 7, 15)

Bintang Tamu

Ahn Nae Sang

as Secretary Moon [Man Su's assistant] (Ep. 1, 3, 13)

Bintang Tamu

Um Hyo Sup

as Goo Man Su [Ra Ra's father / President of Ra Ra Cosmetics] (Ep. 1, 5)

Bintang Tamu

Baek Young Kwang

as [Choo Min Soo's subordinate] (Ep. 1, 5)

Bintang Tamu

Kim Joo Yeon

as Kim Shi Ah [Ra Ra's friend] (Ep. 2-3, 9, 11)

Bintang Tamu

Choi Ga In

as [Na Gyeom's mother] (Ep. 2)

Bintang Tamu

Won Mi Won

as Shim Sun Ja [Man Bok's wife] (Ep. 3, 8, 11)

Bintang Tamu

Lee Ji Hae

as Kim So Hyung [Joon's tutor] (Ep. 11-12)

Bintang Tamu

Yoo Joon A

as [Man Bok's daughter-in-law] (Ep. 13)

Bintang Tamu

Ahn Soo Bin

as [Jin's beauty salon customer] (Ep. 14)

Bintang Tamu

Park Se Jun

Composer

Kim Min Kyung

Sutradara

Goo Sung Joon

Sutradara

Oh Ji Young

Screenwriter