It always seems in interviews that Bon Jon (Jon & Richie) take full writing credit for all the songs on their albums. But then if you look up (Winkipedia) Desmond Child, Max Martin, Etc, Etc, it's almost like they get the credit.

First, How much input do you think these outside song writers really have?

Second, I'm sure these guys don't come cheap so I'm surprised Jon would even use them and pay out royalties. Jon and/or Richie penned some great songs without them in the past so I'm not sure why they'd need to use them for more than a song or 2 on each album.

Jon & Richie wrote WWBTF on The Circle. This song is going to drive the album so why use Desmond (and a few others) for a handful of other songs? Do they really need him/them?

Third (for one example), Jon always says when he wrote It's My Life he wanted to use the line "When Frankie Said I Did It My Way" but then if you look up the song, it says that Max Martin wrote it. Did Jon just write that one line?

Forth, I'm curious to see a list of songs Jon and/or Richie just wrote vr songs they wrote with outside song writers