I didn't want to ignore the post just because I personally would not have a use for this, but I did want to comment on this statement:
"I know a laptop is the fastest way to play Mp3's and SEARCH for songs
for some reason all the tablets I have tried just are to slow and awkward for searching for songs while playing, always swiping up/down, quirky things always happening etc,... with a laptop using files its easy as pie with folders, highlight songs, or just hit the letter you need and that will bring instantly to the first song beginning with that letter in the list...cursor down to song hit enter done....nothing works better for my needs. But...."
I will start by saying that I have never used a laptop for a gig, but I have been using the Pro 12 Tablet via midi with the Pa900 for some time now and it works no differently than how you describe your laptop as working ... all of the above "laptop features" you mention are available on the Pro 12, and since I don't believe in 'jinxes', I will say that I've not had any 'quirky' things happen ...

My guitar player friend in NJ has recently started using one (after much encouragement from me) and he is using it to play backing tracks and since he uses 'charts' he even has it set up to scroll with the track ... I will be playing a couple of gigs with him in May and I'm anxious to see how it works out ...

But use all the tools available that suit your needs ...

And now back to the iPOD ...