Complex sentence: When Jaidev Kumar was 5 or 6 Years old then his father passed away so after that his family didn't have any relations with music.After Some years his sister married to Ghazal Singer Chandan Das.
Split into simpler sentences: When Jaidev Kumar was 5 or 6 years old his father died and his family then had no relations with music. After some years his sister married to Ghazal Singer Chandan Das.