Notes since 2018 · reopened 2026

Old songs with hidden stories. Hard ideas, made simple.

Two notebooks under one roof. One tracks down where Hindi film tunes really came from. The other explains the subjects that run a business so clearly that a ten-year-old could follow along.

Notebook one

Bollywood Detective

A folk song, a qawwali from across the border, a European pop hit. Many film songs began somewhere else. We follow the trail.

Open the case files → Notebook two

Learn it simply

Accounting, finance, statistics, project management, risk and AI, each starting from an everyday example before any jargon.

Start learning →

Bollywood Detective

Every great tune has a past.

Hindi film music has always borrowed, from folk songs, ghazals, qawwalis and records from around the world. Some borrowings are open tributes, some are quiet. The case files follow the trail, with dates.

Case 001

Mehbooba Mehbooba

The dance number from Sholay that everyone in India can hum. But the hook was already a hit in Europe a year earlier.

FilmSholay (1975)

ComposerR.D. Burman

Sung byR.D. Burman

The trail

1974
"Say You Love Me", Demis RoussosThe Greek singer's ballad becomes a hit across Europe.
1975
"Mehbooba Mehbooba", SholayThe same opening melody turns up, re-dressed as a smoky Hindi dance song.
Today
Widely noted as inspiredFans and music writers have long pointed out the match. The arrangement and mood are entirely Pancham's own.

Verdict: inspired by

Step 1

Hear it

Something in a song sounds familiar: a hook, a rhythm, a turn in the melody.

Step 2

Trace it

Search the folk traditions, the radio hits and the films of the years before.

Step 3

Date it

A match only counts if the source came first. No date, no case.

More case files, and a Bollywood Detective video channel, are on the way.

Learn it simply

Big subjects, explained like you're ten.

Every lesson follows the same three steps, so nothing feels like jargon.

An everyday example firstA lemonade stand, a birthday party, a bike bought with Mom's help.

Then the real nameOnly once the idea clicks do we call it what the experts call it.

Then the real worldWhere you'll meet it at work, and in professional exams.

Track 01

Accounting

Like: the notebook where a lemonade stand writes down what it sold, what it spent, and what it owes.

Keeping score of money: profit, cash, what you own and what you owe.

Lesson 1 readyProfit vs cash →

Track 02

Finance

Like: deciding whether to spend your savings on a juicer now, or keep the money for later.

How a business decides what's worth spending on, and how to pay for it.

Coming soon

Track 03

Statistics

Like: working out whether your stand really sells more on hot days, or you just remember the good ones.

Turning a pile of numbers into an answer you can trust.

Coming soon

Track 04

Project management

Like: planning a school play so the costumes, the stage and the actors are all ready on the same night.

Getting people to deliver the right thing, on time and on budget.

Coming soon

Track 05

Risk

Like: bringing an umbrella to the picnic, and deciding whether it's worth carrying.

Spotting what could go wrong, measuring how bad it could be, and protecting against it.

Coming soon

Track 06

AI

Like: a friend who has read every recipe ever written guessing what you want for dinner.

What AI really does, where it helps, and where it gets things wrong.

Coming soon

About

Who keeps these notebooks?

Chachaura is written by someone who has spent a long career in engineering and business operations, and grew up with Hindi film songs playing in the background.

Two habits run through everything here. The first is curiosity: hearing a tune and needing to know where it came from. The second is a belief that anything, however technical, can be explained to a ten-year-old if you start from something they already know.

No names and no face. Just the notes.