HIDDEN TRACK
Audio Feature Analytics of Super Junior Albums using Python and Javascript
Tools
Team Size:
Time Frame:
Tools:
My Role:
1
12 weeks
Python, Tableau, Rawgraphs.io, JavaScript, Google Colab, Spotipy, Numpy, Pandas
Data Analytics, Data Visualization Engineer, Super Junior ever lasting friend (ELF)
Media from WIX
Why This Topic
Super Junior (SJ or SuJu) is an award winning South Korean boy band since 2005, but I did not become a big fan of them until recently. However, I became obsessively interested in SuJu and I was excited when I discovered I could know more under-covered through Spotify API. The artists I am comparing are actually both Super Junior, Super Junior D&E (Suju-dne) is a sub unit of Super Junior, with two dancing machines, sorry two dancing members Donghae & Hyukjae, from the father group of 13 members. Here are some of the questions I wanted to ask:
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Suju-dne is known for dancing, so does Suju, what is shown from the data?
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Is there some rule about what kind of songs would be popular?
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Are there typical keys or beats of songs that leads the way to success?
Data Analytics
Python Code to Request Data From Spotify API Steps 1-12
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Spotipy installed to save me from node.js.
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Used Spotify search to request data of specific keywords "Super Junior"
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Prepared artist_uri for further research
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Requested all albums data, with the artist_uri from above.
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Requested all songs from all albums and put them into each album dictionary.
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Set up a return information when they are finished one by one.
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Put audio_features also in the same dictionary as another key-value pairs.
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Set return information to show the process when every 5 albums are finished.
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Created a dictionary saved as a DataFrame of audio features of each song.
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Presented all data in a DataFrame, plus artist name as the last column.
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Refined all lines of data without duplicates.
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Wrote the DataFrame to a CSV file in my google drive directory.
CSV Dataset Overview with audio features from the albums of the artist
Correlation of Audio Features and Popularity of SJ D&E and SJ Songs
Steps to Discover Correlation: Show Trend Lines --> Describe Trend Models --> Find the R squared --> Calculate the Square Root --> Get Correlation Coefficient
All steps the Pearson correlation measures the linear relationship between two variables. It turns out the Correlation Coefficient are very small which means there is no strong correlation between popularity and audio features.
Definition of Audio Features from Spotify
The full Audio Features , key and popularity explanations can also be found on Spotify documents.
Energy - Energy is a measure from 0.0 to 1.0 and represents a perceptual measure of intensity and activity.
Danceability - Danceability describes how suitable a track is for dancing based on a combination of musical elements including tempo, rhythm stability, beat strength, and overall regularity.
Speechiness - Speechiness detects the presence of spoken words in a track.
Acousticness - A confidence measure from 0.0 to 1.0 of whether the track is acoustic.
Duration Ms - The duration of the track in milliseconds.
Valence - A measure from 0.0 to 1.0 describing the musical positiveness conveyed by a track.
Data Visualization
Distribution of Keys of Songs in All Albums of Super Junior and
How to make a Sankey Diagram from rawgraphs.io evolutions in steps
Step 1 Tableau pie chart shows the size of count
Step 2 Tableau pie chart shows the size of count and which songs belongs to what key
Step 3 export the data for visualization in another tool
Step 4 Procedures in rawgraphs.io for a sankey chart
Step 5 The top 1 key picked by Super Junior is C#.
Step 6 The top 1 key picked by Super Junior D&E is C#.
Music Industry is sales driven, in future there maybe more indicators
Media from WIX
Key Takeaways
The python library Spotipy installed saved me from node.js.
RawGraphs.io made it much easier to make a Sankey Chart in Tableau.
WIX is frontend friendly to have builtin Javascript interface to build a keyboard.
The top 1 key picked by Super Junior and Super Junior D&E are both C#.
Interactive Music Player
Play the piano
PLAY| PAUSE the song
Key on piano keyboard
Key on staff lines