Wadih El Safi being a classically trained tenor, is not a verified fact since none of his known works provide a proof of classical singing techniques. He has been known for singing in the belting school class and his phonation are a testimonial of this practice. This is further confirmed in what arguably is his most famous song "Lebnan Ya Ote'et Sama" ("لبنان يا قطعة سما" in Arabic, specifically Lebanese dialect) in which his voice shifts to the so-called Falsetto or more widely recognized today as the "Voce Piena Testa" or the full head register on the second transition "Secondo passagio" around "EB4" note above middle "C4" not overlapping "F4", meaning that his voice falls in the Baritone categorization rather than a tenor precisely a lyric baritone which is often linked to these transition areas. El Safi has no record for singing the "B4" and "C5" tenors' famous "High C" which are the characteristic signature of a tenor's laryngeal mechanism (constriction of the pharynx ) even though many of his age did. He was a classically trained tenor. He gained national recognition when, at seventeen, he won a vocal competition sponsored by the Lebanese Broadcasting Network. El Safi began composing and performing songs that drew upon his rural upbringing and love of traditional melodies, blended with an urban sound, and creating a new style of modernized Lebanese folk music
In 1947, El Safi traveled to Brazil, where he remained until 1950.
El Safi toured the world, singing in many languages, including Arabic, French, Portuguese and Italian, accompanied by his son George.
In the spring of 1973, El Safi recorded and released a vinyl single with the songs "Grishlah Idi" lyrics by Ninos Aho and "Iman Ya Zawna" (lyrics by Amanuel Salamon), first one in Western Syriac and second one in Eastern Syriac. The music arrangements were done by Nuri Iskandar and the songs were produced especially for an Assyrian Musical Festival (in popular speech UNESCO Festival) which was organized twice by the Assyrian Lebanese Association in 1972-73, which occurred in the UNESCO building in Beirut at that time where El Safi participated as a singer.
Wadih El Safi has sung over 5000 songs. He is well known for his mawawil (an improvised singing style) of 'Ataba, Mijana, and Abu el Zuluf. He has performed and recorded with many well-known Lebanese musicians such as Fairouz, and Sabah.