Songs
Statistics that take the whole song as the unit of analysis cover when songs were released, how varied and structured their lyrics are, how they are emotionally coloured, and which themes they explore. For songs that charted, the statistics also capture aspects of their market success.
Songs per Year
Number of songs per year and per archive.
Type-Token Ratio
Lexical diversity (STTR, MATTR) per year and archive.
Strophes per Song
Distribution of strophe counts across all songs, with archive breakdown.
MTLD
Measure of Textual Lexical Diversity (MTLD) per year and archive.
Genres
Genre distribution of chart songs per year, from Schlager to Rap.
Gender
Gender composition of chart performers by year — female, male, and mixed.
Chart Performance
Annual chart placement of chart songs per year, from #1 to #200.
Diachronic Topic Trends
How thematic keyword sets evolve across decades, normalised per 10,000 tokens.
Sentiment Intensity & Polarity
How emotionally dense and how positive or negative are German-language songs?