With both composers living so far apart Peter and Rhys' songwriting proved more difficult than usual...
When Gwilym decided to compete he could have asked his bandmates from Bandana, but instead he's asked his mother for support.
Gai and Philip are well known musicians and composers. Gai is from Tanygrisiau near Blaenau Festiniog, and Philip is from Llanfrothen, Penrhyndeudraeth.
Nia reached the final eight in 2004, can her partnership with Sian Owen take her the extra step and win this time?
Known as the lead guitarist for the Al Lewis Band but recently has gained success performing under the name of Gildas.
A member of many successful bands including Am Dwrw and Hitchcock.
Derfel Thomas has vast experience as a solo artist as a singer and performer, and Arwel has published books and numerous poems over the years.
Rhydian Pughe, from Bro Dyfi, works on the family farm near Machynlleth and would love to compose music for film and television.