The principal characteristic of this music is the romanticism.
Is origin in the bolero and the principal topic is the love.
This kind of music is sung by a soloist that is accompanied by an orchestra.
This music is characterized for be soft and melodious.
We can find many christian artist that sings ballads like:
Marcos Vidal
Cara a cara
Aleluya
Lily Goodman:
Al final
And other artists like tercer cielo, Crystal Lewis, Jaci Velasquez, Ricardo Montaner, etc.