The Good-sounds dataset includes monophonic audio recordings of two types of musical exercises: single notes and scales. These recordings, performed by 15 professional musicians on flute, clarinet, trumpet, violin, and cello, were made in studio conditions at the Universitat Pompeu Fabra. The dataset supports research in sound quality, music education, and audio classification. It includes audio files in .wav format and metadata in .csv format detailing the exercise type, note, pitch, instrument, and performer, among others.