2 different controllers in abstract view

here is the thing

<ion-tabs ng-controller="LoginCtrl">

  <!-- News Tab -->
  <ion-tab href="#/tabs/news">
    <ion-nav-view name="tab-news"></ion-nav-view>
  </ion-tab>

  <!-- Dashboard Tab -->
  <ion-tab href="#/tabs/promotions">
    <ion-nav-view name="tab-promotions"></ion-nav-view>
  </ion-tab>

  <!-- Account Tab -->
  <ion-tab href="#/tabs/signup">
    <ion-nav-view name="signup"></ion-nav-view>
  </ion-tab>

</ion-tabs>

this is a mobile app, and this is the abstract view, I have there the LoginCtrl attached because I need it everywhere, but also, I need another controller to be present everywhere. I need it present everywhere because this is an streaming music app, so the music must be in every view with out stopping. So, what options do I have ? the LoginCtrl is already defined there, I need to set up another controller named AudioCtrl.