Music Score Expansion with Variable-Length Infilling

TL;DR

This paper explores using a variable-length infilling model to extend musical segments at boundaries, demonstrating its potential to preserve musical structure during expansion.

Contribution

It introduces a novel application of VLI for musical segment expansion and proposes a new metric, Register Histogram Similarity, to evaluate boundary preservation.

Findings

VLI can effectively extend musical segments from 12 to 16 bars.

The proposed metric helps quantify boundary preservation.

Results indicate promising potential for musical expansion tasks.

Abstract

In this paper, we investigate using the variable-length infilling (VLI) model, which is originally proposed to infill missing segments, to "prolong" existing musical segments at musical boundaries. Specifically, as a case study, we expand 20 musical segments from 12 bars to 16 bars, and examine the degree to which the VLI model preserves musical boundaries in the expanded results using a few objective metrics, including the Register Histogram Similarity we newly propose. The results show that the VLI model has the potential to address the expansion task.