Until recently, the duo Cahill & Delene performed songs written by other people. As a cover band, they played at weddings, corporate parties and other events. But this Sunday, that all changes when they get to sing their own music to an audience.

"As a cover band, we had to choose music from what's popular," said Barry Cahill, who has been performing with Delene St. Clair for 18 years and married to her all but one of those years. "But there was a gaping hole in our personal expression."

In January, the Valley Center couple decided to change that.

"We've had some fragments of songs rattling around in our brains for a long time and felt it was time to get them in a fixed form," he said. "The other half of the songs we wrote in January. In February we performed them for a small group of friends and then recorded them from March to June."

In August, Cahill & Delene released the CD "Songs for Humanity." It's a combination of sounds, from rock and reggae to folk and R&B.

"These are songs meant to be uplifting as opposed to so many of the angry songs that are out there," St. Clair said. "We had been doing a lot of philosophical studying, and this is what came out. It's very personal."

"Songs for Humanity" speaks to their vision for a conscious planet and sharing new ideas of how people can better themselves. The duo share the vocals, while Cahill plays the sax, keyboard, flute and a Slovak instrument called a fujara. St. Clair plays the guitar. A seven-piece band backs them on piano, bass, drums, percussion, mandolin, dobro and adds background vocals.

While they are proud of the results their easygoing relationship took a beating during the recording.

"This project was a real pressure-cooker," he said.

"Normally we get along really well," she said. "But during this time, I thought, 'uh oh.' But this is supposed to be an album about spiritual harmony and everyone getting along, so we had to remember that."

When the couple perform at Dizzy's, the majority of the songs will come from the CD.

"But there will be a few surprises," St. Clair said. "I'll probably play my Appalachian dulcimer as something to throw in, and we'll sing a new song we wrote since the album came out. And we'll have the full band accompanying us."

Finally, they can sing their own music and sing lyrics that truly reflect their views on the world.

"We hope the CD will help people get out of their minds and into their hearts," she said. "We think that a lot of problems in the world happen because we get caught up in negative patterns. If people would just get out of their minds and come from their hearts, they would get along a lot better."