You can use the bass guitar to accompany yourself and your motherland in the following ways:

1. Learn bass guitar skills: First, you need to learn the basic skills of bass guitar, including fingering, stringing, Rhythm and time signature, etc. These basic techniques will help you better master and perform music with accompaniment.

2. Know and understand the repertoire you want to accompany: To accompany yourself and your country, you need to know and understand the repertoire you want to accompany, including the melody, chord progression and phrase structure. This will help you better grasp the rhythm and melody of the accompaniment.

3. Master chord progressions: Bass guitar is often used to play chord progressions. You need to master the fingerings and positions of various chords, and learn to make smooth transitions when changing chords to ensure the coherence and stability of the accompaniment.

4. Understand rhythm and beat: As an accompaniment instrument, the bass guitar plays a role in stabilizing the rhythm in a song. You need to understand and master the rhythm and tempo of different songs to ensure that your accompaniment is well coordinated with other instruments and sounds.

5. Create organic musical coordination: In order to organically cooperate with the track and sound, you can try to use different bass techniques, such as accompaniment note accents, portamento, eighth notes, etc., to improve the performance of the accompaniment Power and richness.

6. Practice and Cooperate: Through continuous practice and cooperation with other musicians, you can improve your bass playing skills and coordination ability. When practicing, you can choose some simple pieces and gradually challenge more complex works.

The most important thing is to enjoy and love music and accompany yourself and your motherland in your own way.

Hope the above suggestions are helpful to you!