1. A method performed on a computing device that includes at least one processor and memory, the method comprising: matching, by the computing device, an audio rendition to an audio recording based on alignment of pitch contours of the audio rendition and a portion of the audio recording, and further based on similarities between pitch intervals and durations of notes of the aligned rendition and the aligned portion, where the pitch contours each indicate any variation in pitch of a note of the notes relative to a previous note of the notes, where the pitch intervals each indicate a frequency of the note, and where the durations each indicate a length in time of the note; and adding, by the computing device based on a weighting of the portion of the matched audio recording, the matched audio recording to a selection set.
1. A method performed on a computing device that includes at least one processor and memory, the method comprising: matching, by the computing device, an audio rendition to an audio recording based on alignment of pitch contours of the audio rendition and a portion of the audio recording, and further based on similarities between pitch intervals and durations of notes of the aligned rendition and the aligned portion, where the pitch contours each indicate any variation in pitch of a note of the notes relative to a previous note of the notes, where the pitch intervals each indicate a frequency of the note, and where the durations each indicate a length in time of the note; and adding, by the computing device based on a weighting of the portion of the matched audio recording, the matched audio recording to a selection set. 6. The method of claim 1 where the matching is further based on a melody representation of the audio rendition.