 Another notable change was that the national juries could not vote for their own song, a rule which would be continued throughout the contest's subsequent history.Belgium, France, Germany, Italy, Luxembourg, Netherlands, and Switzerland made their second appearances following their débuts in 1956.Austria and Denmark made their débuts; these countries had wanted to participate in 1956, but had applied to the European Broadcasting Union after the deadline for song submissions for that year's contest had passed, thus missing it.