After Oingo Boingo left A&M records, Danny Elfman's first release on MCA records was the album So-Lo. Widely considered to be the fourth Oingo Boingo album, all band members make contributions. So-Lo takes on an even more electronic sound than the previous Boingo album, and this time relies on drum machines through several songs. The single 'Gratitude' was included on the film soundtrack for the Eddie Murphy vehicle Beverly Hills Cop.