Method: Participants were professional Icelandic singers and they were recruited from The Union of Icelandic musicians (FÍH), two agencies; Prime and Promo ehf. and three Facebook groups of singers.
Aðferð: Leitað var eftir þátttakendum hjá FÍH, tveimur umboðsskrifstofum söngvara; Prime og Promo ehf og á þremur hópum söngvara á Fésbók.