There`s a guitar "playing" (sampled, indeed) on the track too, once, after the pattern (see above) and repeatedly, in the chorus. If you want to include that "guitar part" in you playing, it`s a high Bb (GI-3-). Well, that was all. It`s not very exciting to play, I know, but you can always increase the difficulty by playing some variations.
Прямая ссылка на текст песни improvise | текст песни и табы (аккорды) для бас гитары и Mp3: http://musworld.ru/music/eng/109/1/8052.html