He said, "Wheesung was my idol. I would study songwriting by reading his lyrics. He gave me a lot of help in learning about music. It wasn't direct help [from him] but I learned a lot." 

When the idol was asked about a potential collaboration with Wheesung as a follow-up question, Jonghyun revealed that he had insistently whined to the R&B singer for a collaboration.

When talking about collaborating with Younha, Zion.T, and rapper IRON for his solo album, Jonghyun said, "I thought about someone who can express the songs well before choosing them. There were songs that I wrote while targeting a specific person to work with."

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Jonghyun then went on to talk about his thoughts on his solo debut, stating, "I still can't believe it. I worked really hard and intensely on the album so I hope that many people listen to it with interest."

Meanwhile, Jonghyun will be releasing his first ever solo album, 'Base,' on January 12, so keep a lookout!