AngularJS - ngRepeat form builder w/ inputs

HTML

<div ng-app='app'>
<div ng-controller="tenant">
    <div>
     <ul>
          
            </ul>
        <div>Name</div> 
        <input type="text" ng-model="name" placeholder="Organization's Name" required/> 
        
        <div>Contacts</div>
        <ul>
            <li ng-repeat="cont in contacts">
                <div>
                    <span>Name</span>
                    <span>Email</span>
                    <span>Phone</span>
                    <span>Mobile</span>
                </div>
                <div>
                    <span>
                        <input type="text" ng-model="cont.name" placeholder="Name" required/>
                    </span>
                    <span>
                        <input type="text" ng-model="cont.email" placeholder="Email" required/>
                    </span>
                    <span>
                        <input type="text" ng-model="cont.phone" placeholder="Phone" required/>
                    </span>
                    <span>
                        <input type="text" ng-model="cont.mobile" placeholder="Mobile" />
                    </span>
                    <span ng-hide="contacts.length == 1">
                        <a href ng-click="contacts.splice($index, 1)">remove</a>
                    </span>    
                </div>
            </li>
            <li>
                <a href ng-click="newContact($event)">Add</a>
            </li>
        </ul> 
        
        <pre>$scope.contacts = 
{{ contacts | json }};
        </pre>
        
        
    </div>
    <div>
        <button>Crate account</button>
    </div>
</div>
</div>

CSS

</style> <!-- Ugly Hack due to jsFiddle issue: http://goo.gl/BUfGZ --> <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.6.5/angular.min.js"></script> <style> pre {
    margin: 50px 0;
}

JavaScript

var a = angular.module("app",[]);
a.controller("tenant",tenant);
    var a = [{
            name: 'a',
            email: 'a',
            phone: 'a',
            mobile: 'a'
        },{
            name: 'a',
            email: 'a',
            phone: 'a',
            mobile: 'a'
        }];
function tenant($scope) {
    $scope.name = '';

    $scope.contacts =[];

         /* $scope.contacts = a; */
     $scope.tests = ['a','a','a'];
   console.log(a);
    $scope.newContact = function ($event) {
      console.log($scope.contacts);   $scope.contacts.push(JSON.parse(JSON.stringify(a[0])));
            console.log($scope.contacts); 
          $scope.tests.push('a'); 
        if ($event) {
            $event.preventDefault();
        }
    }

    $scope.newContact();
}