Add playback bar please

[FiftyFour7250]

Hey. I really like your app. But can you please add a playback bar with the ability to rewind, by clicking on it (as it works in any player). Just, you know, buttons for rewind to 5 seconds - cool, but if I read the lyrics, and want to rewind even for at least 30 seconds - I have to open Spotify and then go back... Little inconvenient. I think 5 second buttons could be on keyboard arrows, like on YouTube.