Both the Phrase Editor and the Main (Home) Screen allow you to move quickly through a song. You can move the "Cue" button before or during play back to fast forward or rewind.
You can use the "Jump" button on the Main screen to move back a couple of seconds. This can come in handy if you are transcribing a song and come a cross a tricky section but do not want to take the time to define a phrase, or loop the section
If this is section of a song you want to loop or work with more than once or twice, it is probably better to take a little extra time and define a phrase.