The song is arranged to perform the guitar solo. For convenience, the original performance of the key (D minor) was replaced by a Minor.
Entry is presented in two versions: the first - in the form of melody and chords repeated eighth bass La. This is called the pedal point. That sounds pretty volume externally attached to the execution of the drama and not very difficult to celebrate, provided the ability to play chords.
Second - it is easier and looks like a broken chords or just melody and bass.
The archive - all for quick and easy Song lesson: PDF-file with notes, tablature, fingering and recommendations executor; song file format MIDI, Guitar Pro 6, the recording format MP3 (all for two variants of the entry). Listen to the song here: http://mi-minor.ru/tabs/56.htm