There are many software that automatically generate accompaniment. Here are some of the ones I found:

1. NetEase Tianyin: It is a one-stop AI music generation tool launched by NetEase Cloud Music. Music theory knowledge, one click to get started. Music lovers or singers only need to input inspiration, and AI can assist in completing lyrics, music, arrangement, and singing. After the AI ??first draft is generated, collaborative adjustment of lyrics and music is supported.

2. TMEStudio: It is an AI music production tool launched by Tencent Music Entertainment. It is jointly created by its Galaxy Sound Effects, MUSE, Tianqin Lab, and TencentAILab to help music lovers. Make creation easier.

3.JJazzLab: It is a foreign automatic accompaniment generation software that can generate files in MIDI format and make fine adjustments in other professional host software.