Top 24 acts were chosen with six in each of the four category.
Candidates posted their audition videos on YouTube, and a winning act was chosen for each concert.
The acts competing in the Big Artists section were chosen through an internal selection.
The winning act was chosen via 50% televoting and 50% jury voting.
Each act will be chosen and judged by a panel of performance experts consisting of 4 judges.
Qr if this act, as with the coloration of the plants in the river, were random, or chosen, of one who once had been her lover.
Five acts, from the submissions received, were chosen to perform for the judges on 17 February at the Birmingham auditions.
The act will be chosen from this year's third placed semi-finalists.
The other nine went to the Wildcard show where an additional three acts were chosen to go the first stage.
Four acts were chosen to compete in the knock-out rounds.