Please someone help me find the song by identifying the videoclip

Alright there's a song that has 4 or 5 members,its a boyband
they play awesome violing too
they are sitting in a room with sofas
they are sitting on a sofa
then they move in a studuo
the main lead singer plays violin
the others play guitars and other instruments
the members are all blonde from what i remember
the song may start with the letter "f" or "s" i cant recall

THE BAND PROBABLY STARTED WITH "O"

does anyone have the slightest idea???
i think the boyband was American or sth like that..
please someone help me find it
it had awesome violin D:

these are the ones i can think of, without more information

O-Town
One Step Away
One Call
Octappella


if its none of those,... can u please tell us, wen did u see this video and / or wen do u remember the year

It was around july 2010 somewhere there i believe when it came out
well form what i've seen so far the lead singer doesn't play violin from those bands :/

oh, i know... but didnt know what year or era u were talking about, so i jus started to think of any......

the one i can think of around 2010, would be ONE DIRECTION

let me know