1973–1975: Zenith – "Gigi" and "18 ans" thumb|upright|Dalida in 1974 By the end of 1973, Dalida released the promotional single A-side "" with B-side "". In that same time, she released the album Julien that gathers most of her 1973 songs. The song "" quickly started gaining success and it was again released in the beginning of 1974 but as B-side to single A-side "". "Il venait d'avoir 18 ans" peaked number 3 in Québec, number 4 in Belgium, number 13 in Germany, and number 37 in Italy while "" beat the record held by Frank Sinatra's "Strangers in the Night" from 1966 for the most sold single in Benelux and charted number 4 in France and number 1 in Switzerland, number 2 in Netherlands, number 1 in Flanders, number 3 in Québec, number 2 in Spain and number 59 in Italy. The first performance of both songs was during her concerts in Olympia 1974. The whole four weeks were sold out and a triumph for the singer and was followed again with a live album, Olympia 75.
1973–1975: zeNiTH – "gigi" anD "18 ans" ThUMb|UpRiGhT|dalida IN 1974 BY THe eNd oF 1973, dAlIdA releasED the proMOtioNal siNgle A-Side "" wiTh b-side "". in that same tIMe, ShE relEAsEd thE albUM Julien thAt gAtHerS MOsT Of hEr 1973 sONGs. tHe SONG "" quiCkLy stARteD gaining SucCess aNd It was agAin REleasED in THe begInninG Of 1974 but as b-side To sIngLE A-siDe "". "il venait d'AVoir 18 aNS" peAked numbER 3 In QUÉbeC, numbEr 4 In BElgIuM, numBEr 13 in gERmany, and nuMber 37 IN iTAly WhilE "" beat tHE reCOrd hEld by frAnk Sinatra'S "stRaNgErs in The NIghT" from 1966 for THE mOst SoLd sinGlE IN Benelux ANd charted nUMbEr 4 in franCe ANd NumBEr 1 In switzeRlAnd, nuMbeR 2 in nEtheRLands, numbER 1 In Flanders, numBEr 3 in quéBec, numbeR 2 in SpaIn AND numbeR 59 iN itaLy. tHE firSt peRfoRmancE of boTH SonGs was dUrIng her ConcerTS iN OLympIa 1974. the wHole foUr weeks WERe sOld out aND a triUmpH for the singEr and wAs foLloweD Again with a livE albuM, olYMPIa 75.