Thank You TheHoon for the question. Unfortunately You can't see this for the moment.
This information about band's fame should be available in the near future. As soon as this will be available we`ll spread the word.
We hope the question was answered. If no - could you please specify your question.
Definitely there will be game changes to show the band's or song's level and fame. I use word show because now these things exist and are part of the game mechanics.
To answer to Your question why one song performs better than another, it depends on three things: level, age and fame. The level you can probably guess by looking at the band's members. The age of the song is shown in the charts. And the fame is currently hidden, but not for long.
Your other suggestions about song writing skills and recording impact to a song's level, is at least worth thinking about, but for the moment there are no plans according this. We`re glad You like this game and thank You very much for the comments and thoughts. If You have more thoughts we`ll be glad if You`ll share them with us.
For the moment the only option to come out of negative money balance is to go bankrupt. You can find it here: "Settings >> Go bankrupt" or in home page near Your negative money balance.
Before accepting bankruptcy please read conditions, which are stated on bankruptcy page.
Hope this was helpful.