Fig 1: Illustration of churn — Should I stay or should I go? — The Clash.

Project Definition

In this blog post I summarize my findings of the Udacity Data Science Nanodegree Capstone Project — Sparkify.

Project Overview

Suppose, you are a Data Scientist at a popular digital music service similar to Spotify or Pandora. Let’s call it Sparkify. Users of Sparkify can stream their favorite songs either by using a free tier that places advertisements between the songs or by using the premium subscription model. The latter one is a flat rate account where they stream music as free but pay a fixed price on a monthly base. Users can churn or cancel their service at any…


Benjamin Britten: ‘The old idea of a composer suddenly having a terrific idea and sitting up all night to write it is nonsense. Nighttime is for sleeping.’

Yes, that is true. You need a restful sleep as a famous and creative song writer. But do you only need creativity to write popular music? What are the key drivers? Are there hidden rules to write a song? Not just any song, but a song which will become popular!!!

In this study based on a Spotify Dataset from Kaggle with 170k tracks released between 1921 and 2020 I investigated a set of…

David Hartmann

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