"Ten years ago, basic courses could cost up to $1,000. With cheaper equipment today, classes are more affordable," says DJ KoFlow, a veteran in the industry. Today, a basic course for four sessions starts at $190.
Social media has also influenced the scene, says the full-time DJ, who teaches at E-TracX DJ Skool & Studios. "Now, everybody can be somebody (on social media) even if they aren't as skilful. Many people want to be like (David) Guetta and Avicii, but they're not solely DJs, they're music producers. The lines have been blurred."
Children who attend the classes are usually introduced to DJing by elder siblings or their parents.
In Alisha's case, her parents encouraged her and her brother to pick up the skill. Her mother Dimple Ramchandani, 41, says: "We wanted to expose our kids to different interests. DJing was also a way to give them more self-confidence."
Alisha's brother Kevin, 15, a St Patrick's Secondary School student, has already completed the intermediate course and is interested in becoming a full-time DJ in the future.
DJ classes can also lead to a career, as was the case for university student Rica Wong Chu Wen, 23. She started DJing only two years ago and is now a resident DJ at Empire, a penthouse lounge at 50 Raffles Place.
After completing her course, she would head to clubs to work as a light jockey - managing the lights on the dance floor - and stand in for DJs when they went on toilet breaks.
"After a while, the manager at Empire noticed I could DJ and took me in as a resident DJ."
While many think DJing is just about playing in nightclubs, those in the industry say it is a form of creative expression for many people.
Mr Chris Columbus, 34, director of Le Sens' Music School, says: "It is a performing art. It helps build confidence and creativity."
Student Ryan Sun, 18, agrees. "DJing has helped me build charisma. When you DJ, it's not just about playing music behind the equipment."
The Ngee Ann Polytechnic film, sound and video student takes lessons from POP Studio DJ and spends nine to 12 hours a week practising to create his sound. "You need to connect with the audience, have stage presence and bring out your personality through your music."
Working adults are also picking up DJing skills in their spare time.
Mr Muhammad Zaki, 29, a full- time car salesman, is fulfilling his dreams of DJing. "I told myself it's now or never. I don't want to spend my life just earning money, I want to pursue my passion. I have been selling cars for eight years, but I have wanted to be a DJ since I was 21."
He was unable to pursue his dream when he was younger because the classes and equipment were too expensive. He later chanced on MODJs' basic DJ techniques class under SkillsHQ Academy - an accredited SkillsFuture Credit course for eligible Singaporeans - and took the one-day crash course. He then signed up for more classes at MODJs.
He has completed the advanced DJ course and will start his turntablism one next month, learning to create new mixes using vinyl records and turntables. "When I come back from work early, I'll be in my room practising. Funnily enough, my parents still don't know that I'm DJing. I don't think they'll approve, so I just told them I'm learning music," he says.
But not all parents disapprove of DJing. In fact, some dabble in it too.
Mr Shasi N. Gangadharan, 52, CEO of Berkley Insurance Asia and a father of two teenagers, signed up for a 10-week course at Le Sens' Music School so that he could spring a surprise on his friends at his 50th birthday party, themed Revelation. "I took to the platform and everyone was shocked. They still are."
After his party, he continued DJing for his friends and even at his company's dinner last December. He has spent close to $6,000 on equipment.
"My wife is supportive - she knows how much I love music," he said. "My children enjoy my music too. They are the guinea pigs for my mixes."
Upcoming gig at Zouk Phuture for teen