Since the symbol represents a "target" weight rather than an exact one, a conceptual music feature could play with this idea of .

The title of Ecco2k's debut album, , does not use a traditional font. Instead, it features a specific mathematical and commercial symbol known as the Estimated Sign (℮) The Story Behind the Symbol The "e" on the cover is the Estimated Sign

There is named “Ecco2K font.” Instead, the term refers to a distinctive typographic style associated with his album E (2019) and surrounding visual branding. The style is defined by:

The e Ecco2k font has had a significant impact on modern design, inspiring a new generation of typographers, designers, and artists. Its influence can be seen in: