 Valentina Monetta represented San Marino for a third and final consecutive year , having previously represented the microstate at the 2012 and 2013 contests . This makes Monetta the fourth main singer to compete in three consecutive contests ( and the only one of amongst them never to win in one of these occasions ) , following Lys Assia and Corry Brokken , who both competed in the 1956 , 1957 and 1958 contests , and Udo Jürgens , who competed in 1964 , 1965 and 1966 . Paula Seling and Ovi returned as a duo , having previously represented Romania in 2010 . The Tolmachevy Sisters , who represented Russia , previously participated in and won the Junior Eurovision Song Contest 2006 . Macedonian backing vocalist Tamara Todevska previously represented Macedonia in 2008 . Martina Majerle , who represented Slovenia in 2009 and provided backing vocals numerous times for Croatia ( 2003 ) , Montenegro ( 2008 ) and Slovenia ( 2007 , 2011 , 2012 ) , returned as a backing vocalist for Montenegro . 
