Desultory notes, as in:
https://www.merriam-webster.com/dictionary/desultory
Definition of desultory
1 : marked by lack of definite plan, regularity, or purpose

a dragged-out ordeal of … desultory shopping —Herman Wouk

2 : not connected with the main subject desultory comments
3 : disappointing in progress, performance, or quality a desultory fifth place finish a desultory wine

Not as in:
Wikipedia
Desultory was part of the first wave of Swedish death metal bands, alongside Entombed, Dismember, and others. Into Eternity, their Metal Blade debut following a lesser-known EP release, is standard for the genre, energetic and forceful, straddling the line between the more brutal American death style and the melodic Gothenburg variety.