. ♪ ♪ ain't no mountain high enough ♪ >> reporter: valerie simpson and her late husband nick ashfordord & simpson. they wrote songs for singers like diana ross, ray charles, aretha franklin, the supremes, chaka khan, and for themselves. >> you want it to pop, that's for sure. so you might go up quarterly so it sticks out in a way that it grabs your attention. >> reporter: that's exactly what she did in her hit "solid." ♪ solid, solid as a rock ♪ that's what this love is >> we live in such a fragmented world, right? and hits make you feel like the world is maybe a slightly smaller and more connected place. >> reporter: john seabrook is the author of "the song machine" which describes how hit songs are written today. are there elements that can be counted on to make a hit song? >> it clearly has something to do with representation, because the brain loves patterns that it can recognize. ♪ i stay out too late >> reporter: a perfect example is the taylor swift song "shake it off." and not just in the catchy chorus. >> but this is the real genius of a pop song, to make something that's si

at the heart of it, there is still magic in the air.Ñi >> valerie simpson says the same thing. >> my your life. i hope that it touches something deep down. for the whole family. new vicks vapopatch. breathe easy. when you drink or eat something that's acidic everyone is at risk for enamel loss. it sucks the minerals out of the tooth's surface. pronamel is formulated to help deliver minerals to the tooth's surface to help reharden and strengthen your enamel. my body is truly powerful. i have the power to lower my blood sugar and a1c. because i can still make my own insulin. and trulicity activates my body to release it like it's supposed to. trulicity is for people with type 2 diabetes. it's not insulin. i take it once a week. it starts acting in my body from the first dose. trulicity isn't for people with type 1 diabetes or diabetic ketoacidosis. don't take trulicity if you're allergic to it, you or your family have medullary thyroid cancer, or have multiple endocrine neoplasia syndrome type 2. stop trulicity and call your doctor right away if you have an allergic reaction, a lump or