rehearses for opening night here 24 members of this production will soon be making their leading man josh grogan -- josh groban. this is something you wanted for a long time? >> yes, it was my childhood >> reporter: for weeks of the 35-year-old singer has been putting in grueling 12 hour days to get ready. it is a hard job as you thought it would be? >> i'm always a hard worker i have asked the -- excellent work ethic and i'm also worried. i think those are great combination. >> reporter: on the first night of previews this month after a lifetime of dreaming, josh groban was finally ready for his broadway entrance. what you remember about that moment? >> was more emotional than i thought it would be. i was trying to be calm and collected and professional thinking i have a preview to do, let's go do this. you think about the moment you didn't know if you could do it. you think about all the people that discourage do, the ones that encouraged you, and then >> he is pretty amazing. his broadway debut plus halloween trick and treat sunday morning right here in wbz at 9 am. we will be back. she saw t

the things that could've been there but i never had the nerve note dote >> reporter: including josh grogan. >> this is something you wanted for a long time? i it was my childhood dream. >> [ singing ] ? >> reporter: for weeks now, the 35-year-old singer has been >> is it as hard as you thought it would be? >> it is harder than i thought it would be. i have an excellent work ethic but i worry. i think the two are related. on the first line of previews this month, after a lifetime of dreaming, josh groban finally was ready for his broadway entrance. >> what do you remember about that moment? i it was more emotional than i thought it would be. in my first preview, i thought, i have a job to do. let's go do this. you think about the moments, he did nothing to do it. you think about all of the people that discouraged you, the people that encouraged to. the teachers. and then you just have to perform. >> josh groban calloway w and some holiday tricks and treats. that is this sunday right here >>> spending $400 billion on halloween candy this year. if you a sweet tooth and are to go to trick-or-t