What you can do is figure out what they like to listen too, and get a song choice from there.
Ask your brothers.
they sing a song called Hey Little Brother but i think someone else wrote it. Eric Scott Smith wrote it.
Because they liked to sing a song of tribute to their friend
Ralph Geddes
Her brother is in a band called Metro Station, i think the song your thinking about is "shake it"
yes she did her brother wrote the song
billy ray cyrus
twinkle twinkle little star
" brother to brother" and chorus
Little Wing
Yes the puppies do sing that song there on youtube
Researching to find who the artist is that sings the song "Sing It" has not provided any answers. It appears that there is not a song by that name, but there is a song called Sing It Back which was recorded and performed by Moloko.