It would appear that J.S. Bach really composed his two - and three - part Inventions on purpose to prepare his pupils for his larger works, - especially for his "Well-tempered Piano" - and as such they cannot be too urgently recommended.
15 inventions:
1. Invention in C major, BWV 772
2. Invention in C minor, BWV 773
3. Invention in D major, BWV 774
4. Invention in D minor, BWV 775
5. Invention in E-flat major, BWV 776
6. Invention in E major, BWV 777
7. Invention in E minor, BWV 778
8. Invention in F major, BWV 779
9. Invention in F minor, BWV 780
10. Invention in G major, BWV 781
11. Invention in G minor, BWV 782
12. Invention in A major, BWV 783
13. Invention in A minor, BWV 784
14. Invention in B-flat major, BWV 785
15. Invention in B minor, BWV 786
This book, "Klavierwerke. 15 inventions BWV 772-786", by Johann Sebastian Bach, is a replication of a book originally published before 1890. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible.