Welly did not feel cut out to be an actor, so to prepare for the audition he asked his grandmother Kao Ya-mei, who was an operatic vocalist, to give him some lessons.
而並不認為自己是個當演員的料的楊呈偉，為了這次試鏡，硬著頭皮接受外婆──聲樂家高雅美──的發聲訓練。