How to reference a music background from a singleton class?

I have done a singleton class called MyBgMusic.h & MyBgMusic.m. How to reference that singleton class to my SecondViewController or the rest of the XIB.

H file :

#import
#import

@interface MyBgMusic : UIViewController {


AVAudioPlayer *player;
UIButton *playBgMusic;


}

@property (nonatomic, retain) IBOutlet AVAudioPlayer *player;
@property (nonatomic, retain) IBOutlet UIButton *playBgMusic;


+ (id)sharedManager;

-(IBAction) toggleMusic;


@end

M file :

#import "MyBgMusic.h"

static MyBgMusic *sharedMyManager = nil;

@implementation MyBgMusic

@synthesize player,playBgMusic;

#pragma mark -
#pragma mark Singleton Methods

+ (MyBgMusic*)sharedManager {

static MyBgMusic *sharedMyManager;
if(!sharedMyManager) {
static dispatch_once_t oncePredicate;
dispatch_once(&oncePredicate, ^{
sharedMyManager = [[super allocWithZone:nil] init];
});
}

return sharedMyManager;
}

+ (id)allocWithZone:(NSZone *)zone {

return [self sharedManager];
}


- (id)copyWithZone:(NSZone *)zone {
return self;
}

#if (!__has_feature(objc_arc))

- (id)retain {

return self;
}

- (unsigned)retainCount {
return UINT_MAX; //denotes an object that cannot be released
}


- (id)autorelease {

return self;
}

- (void)dealloc
{
[MyBgMusic release];
[playBgMusic release];
[player release];
[super dealloc];
}
#endif

#pragma mark -
#pragma mark Custom Methods

- (IBAction)toggleMusic {

if ([self.player isPlaying] == YES) {
[self.player stop];
} else {
[self.player play];
}
self.playBgMusic.enabled = YES;

}

- (void)viewDidLoad
{

NSString *path = [[NSBundle mainBundle] pathForResource:@"music" ofType:@"mp3"];
self.player=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
player.delegate = self;
[player play];
player.numberOfLoops = -1;
[super viewDidLoad];

// Do any additional setup after loading the view from its nib.
}

SecondViewController.m ( I want to reference from the singleton class so that I can use it all over again without mess up the background music when pressing on and off. )

- (IBAction)toggleMusic{

if ([self.player isPlaying] == YES) {
[self.player stop];
} else {
[self.player play];
}
self.playBgMusic.enabled = YES;

}