>> brian wilson, smokey robinson, marvin gaye, paul simon, james taylor, for starters, don henley. tavis: have you figured out -- i always ask this question of every great songwriter what makes a great song for you. >> nothing is out of place. everything that happens in a song is natural, and you never go, why did he go to that gordcord? it always has a natural flow to it, so it is a certain combination about the lyrics and how it all flows together, and the other thing is it is visceral, and it gets you in a place of his mind, spirit, body, a cause big plays that happens when we listen to music -- a cosmic plays that happens when we listen to music. i have been playing some shows at the orchestra, and people in the audience -- i am not going to just indulge myself with gov. whatever i want, and then i start to play songs from this record, and i see some people who say, i like that song. people say, i like that song. give something happens to people, this romantic music, and that is what music does. it gets us to a place where language does not go. tavis: i have always loved string

marvin gaye, and it takes to do, and bob was the first song writer i ever met.ub watching another detroit band, and bob says, they are never going to make it like this. i said what the mean, and he said, they do not write their own songs. he said if you want to be successful in the music business, you have got to write your own songs, and i looked at him and said, what if they are bad? he said, they are going to be, but just keep writing, and eventually you will write a good one. >> when, where, and how did you figure out if you have this gift of songwriting? when did that epiphany happened to you? >> i got in a pretty good band in birmingham, michigan. it was probably the only surf band in detroit. the band has a lead singer, and the guys are playing their instruments to whatever level of proficiency, and i got in this band, and they were arraigned beach boys songs and eagles songs and buckinghams and songs with a background vocals, so i really got into the singing thing and the melodic thing, and i enjoyed it so much, and i got of lot of encouragement. he said

. ♪ ain't no mountain high enough ♪ >> marvin gaye and tammy, they just had a certain -- >> mariah whitneyrl. >> reporter: so, what exactly makes a great one? the reality show "duets" is asking american to figure it out. >> i heard a couple of pitchy things here or there. >> reporter: but we have never seen this. ♪ some people want diamond rings ♪ >> reporter: judges singing on stage, helping their proteges compete. and behind the scenes, too, helping with singing and song selection, even fine-tuning dance moves. >> what doesn ♪ what doesn't kill you >> reporter: kelly clarkson. robin thicke. ♪ this ain't a movie >> reporter: r & b star john legend. and country rocker jennifer nettles of sugarland, compete each week with their own hand-picked partner. the show is hoping that unlocking the mystery of a great duet will unveil a single star. ♪ i'm begging you >> do something cute. >> reporter: kelly clarkson is one of them. she won the original "american idol" in 2002 and she knows a thing or two about pressure and critics. >> this wasn't your greatest performance for me. >> ten years later a

i grew up on motown, marvin gaye, diana ross, i always had love in the back of my mine, i grew up with the concept with him was let's take the eye off his weight and put your eye more on his style and his heart, and his swag. so when he was singing "i want somebody to love me for me" ♪ >> that was always the concept style and love and attitude. >> you gave us ghetto love, mary j. blige singing -- that is a great image. what happened to that stuff? >> in the 80s, radio, black radio especially was about rap. it wasn't necessarily a lot of love in rap. >> one of the things you mentioned was motown how the uptown sound becomes a response to motown and the critics said andre harrell was over his head, once he got to the big corporation he couldn't handle it. >> they knew me coming in the door they were this far in the hole and they could have said to me "we should do it this way" had to tell me i'll let you build the biggest record company. takes five years to build it. i was only there for six months before stuff started popping up in the papers. >> that is one of the reasons most of the t

let's start with the marvin gaye subsection here. let's talk presidents and tax returns.rty candidate including his dad releases multiple tax returns. george will and bill christol said as much. >> there's something he doesn't want to us see. i don't think it's anything criminal. it's more of the same. more offshoring, offshore investments and also i think it will be revealed he does let us see access for the previous several year, you'll see some of his investments were with institutions contributing to the downfall of our country. things like fannie mae and freddie mac, schemes we've seen in these sort of high-end financial institutions. you'll see bain and romney was probably involved in some of those things. illegal, but things that would be damaging to him. >> certainly. so john, any armchair campaign manager knows you have to release the tax returns, so why is the romney campaign stumbling on something so simple and obvious? >> his finances are not simple. they're complex. i believe that he is correct that thai calculated that it would be more embarrassing for them