Jon Bon Jovi, in an interview, once said that his best song was "Track 7", to "listen to track 7" and "it's all about track 7"
Back in the old days, everyone bought rock albums on Vinyl and an album typically had 10 tracks, 5 each side
Track 7 would be Side 2, track 2
On cassette, and later CD, track 7 would be track 7, the concept of of Side Two only remembered by those who had built up vinyl collections, or who made a point of still buying a 12 inch vinyl, up to the point where you still could
Bon Jovi "First Album"
Track 7 - Track 2, Side 2 - Burning For Love
7800 Degrees Fahrenheit
Track 7 - Track 2, Side 2 - Hardest Part Is The Night
Slippery When Wet
Track 7 - Track 2, Side 2 - Without Love
New Jersey
Track 7 - Track 2, Side 2 - Wild Is The Wind
It gets trickier when an album has 6 tracks on side one - does track 7 mean literally the 7th track, now track one on side two, or symbolically would the best track still be in it's place of Side Two Track Two, now the eighth track on the album?
Keep The Faith
Track 7 - Dry County
Track 2, Side 2 - Woman In Love
Dry County is considered one of their best compositions, also a single, while Woman In Love is a great rock track, an obscure album track to all but the true fans
Some view I Believe as the "bonus" track that opens the album, with the title track, it's lead single, being the true track one, which makes Woman In Love the track 7
From Keep The Faith onwards, all Bon Jovi albums, now leading with CD sales rather than vinyl, would have at least 12 tracks, making the discussion about whether we consider Track 7 on the CD or "Track 2, Side 2" symbolic - and this depends on what you consider to be the better song, the true "hidden gem" that Jon was talking about
These Days
Track 7 - My Guitar Lies Bleeding In My Arms
Track 2 Side 2 - It's Hard Letting You Go
It could be that the classic Bon Jovi fan from the vinyl era would still by his Bon Jovi albums on 12 inch vinyl, and would look to Side Two Track Two as Jon's hidden gem, would not buy the CD and ignore the CD listing
After the 5 year gap between These Days and Crush, Bon Jovi shifted into the Millenium and their new era, where they no longer had the big release singles like Living On A Prayer and Bad Medicine, many people believing It's My Life to be their last great single release, and last great stadium song
So some fans, now buying BJ CDs, find the concept no longer applies. This would be up to a fan whether they wanted to see if the Track 7 listed is the hidden gem, and if they want to compare it to Track 8, the symbolic "Side 2 Track2"
Crush
Track 7 - Mystery Train
Track 8 - Save The World
The rest you can look up on your collection at home if you were still buying BJ albums at this point