  Large models for text-to-music generation have achieved significant progress,
facilitating the creation of high-quality and varied musical compositions from
provided text prompts. However, input text prompts may not precisely capture
user requirements, particularly when the objective is to generate music that
embodies a specific concept derived from a designated reference collection. In
this paper, we propose a novel method for customized text-to-music generation,
which can capture the concept from a two-minute reference music and generate a
new piece of music conforming to the concept. We achieve this by fine-tuning a
pretrained text-to-music model using the reference music. However, directly
fine-tuning all parameters leads to overfitting issues. To address this
problem, we propose a Pivotal Parameters Tuning method that enables the model
to assimilate the new concept while preserving its original generative
capabilities. Additionally, we identify a potential concept conflict when
introducing multiple concepts into the pretrained model. We present a concept
enhancement strategy to distinguish multiple concepts, enabling the fine-tuned
model to generate music incorporating either individual or multiple concepts
simultaneously. Since we are the first to work on the customized music
generation task, we also introduce a new dataset and evaluation protocol for
the new task. Our proposed Jen1-DreamStyler outperforms several baselines in
both qualitative and quantitative evaluations. Demos will be available at
https://www.jenmusic.ai/research#DreamStyler.
