Being able to have a plethora of powerful features while also having quick and efficient access to music playback is one of the great benefits of smartphone ownership. Once upon a time, mobile phones would have only come with certain limited features meaning you would be lucky if you got the ability to playback MP3s, never mind listening to those songs on the fly while using other apps. Having said that, listening to music can sometimes be intrusive and can detract from the main usage of the phone.