This is a little tune from Star Wars you hear during scenes with the bad guys.
Its tabbed for guitar but could be played on a bass.

Standard Tuning

E|---------|---------|---------|---------|---------|---------|---------|---------||
B|---------|---------|---------|---------|---------|---------|---------|---------||
G|---------|---------|---------|---------|---------|---------|---------|---------||
D|---------|---------|---------|---------|---------|---------|---------|---------||
A|---1-----|---1-----|---1---5-|-4---3---|---1-----|---1-----|---1---5-|-4---3---||
E|-3---3---|-3---3-1-|-3---3---|---------|-3---3---|-3---3-1-|-3---3---|---------||