The Mixolydian mode is the fifth mode of the major scale. Don't let the funny name put you off. This is a sound that has been used in hundreds of bass lines you love.
In this lesson, I'll show you the following (the time stamps are where they appear in the video below):
01:44 Come On Come Over - Jaco Pastorius
03:58 Tom Sawyer - Rush
06:15 Day Tripper - The Beatles
07:07 Ghostbusters - Ray Parker Jr.
07:44 I Feel Good - James Brown
08:20 Oh, Pretty Woman - Roy Orbison
09:04 Shake Your Body (Down To The Ground) - Michael Jackson
10:17 Signed, Sealed, Delivered (I'm Yours) - Stevie Wonder
Scroll down to hear the originals and to learn a one octave Mixolydian mode.
The Mixolydian Mode For Bass
Modes are cool. If you want to learn more about them, I have a lesson on them:
How to Use Modes: A Guide For Bass Players
Here, though, is a one octave E Mixolydian mode. It's the only scale I used in the intro to this video lesson.

Note the intervals that it is made up from. If you like that sound, you'll love soul bass playing which is full of this scale. There are lots more examples in Soul, RnB & Motown Style Basslines.
Here are the original bass lines:
Come On Come Over - Jaco Pastorius
Tom Sawyer - Rush
Day Tripper - The Beatles
Ghostbusters - Ray Parker Jr.
I Feel Good - James Brown
Oh, Pretty Woman - Roy Orbison
Shake Your Body (Down To The Ground) - Michael Jackson
Signed, Sealed, Delivered (I'm Yours) - Stevie Wonder
If you liked this lesson, you'll also like these ones:
11 Amazing Famous Bass Lines (Natural Minor)
9 Amazing Bass Lines (That Use Major Pentatonic)
Learn 11 Amazing MAJOR SCALE Bass Lines
Learn 11 Amazing Bass Lines (Minor Pentatonic)